A photograph of a male Peacock Blenny taken in 2009. Credit to George Chernilevsky. Today’s article is going to dive into the fascinating lives of the Peacock Blenny of Trieste, Italy. Trieste is a port city located in Northern Italy along the Adriatic Sea. It has a fairly large population of 198,668 individuals. It is located near the Italian-Slovenian & Italian-Croatian borders. The city links these 3 countries, as well as the rest of the Mediterranean, making it a center of trade. Modernly, it is considered the Mediterranean endpoint of the 21st-century Maritime Silk Road, an international development initiative developed by the Chinese Government. Trieste is often colloquially referred to as the “City of Science”, given its heavy research presence. Across Europe, it has the highest number of researchers per capita, at an astounding 37.1 people per thousand individuals. In addition to its scientific prowess, it is also known for its contributions to the coffee industry, affectionately referred to by lovers of the drink as the “City of Coffee”. Annually, residents of Trieste consume twice the mean of the average Italian. The city is packed with historic cafes, coffee breweries, roasters, & important companies. Apart from its statuesque architecture, vibrant culinary scene, & domineering research industry, Trieste is known for its natural beauty. With wonders such as the Miramare Nature Reserve, Rosandra Valley Reserve, & Carsiana Botanical Garden, the city is home to thousands of fascinating creatures, both terrestrial & marine. One of the creatures that calls Trieste home is the Peacock Blenny. The Peacock Blenny is a species of fish known for its elongated appearance, & fleshy crest. They are native to the Mediterranean, as well as the North Atlantic, & occupy shallow waters between 0 & 10 meters. They may be seen along rocky shorelines, intertidal zones, harbours, & coastal man-made structures. Individuals are fiercely territorial, & protective over their homes as well as their young. In today’s article, we will discuss the discovery & life of the Peacock Blenny, the reproductive strategies of the Peacock Blenny, the distribution of the Peacock Blenny, & the scientific aspects of the Peacock Blenny. With that being said, let us delve into the fascinating world of this brilliant sea-creature! The Discovery & Life of the Peacock Blenny The Peacock Blenny was discovered in 1810 by Antoine Risso, a French naturalist & taxonomist from the city of Nice. Individuals measure 2.3 to 5.1 inches (6 to 13 centimeters) in length, & 7.12 to 27.63 grams in weight. Their lifespan is 2 to 5 years, with individuals living slightly longer in captivity. Unfortunately, very little information is available on the intelligence of the Peacock Blenny. Generally speaking, Blennies tend to be among the most intelligent fish, possessing some level of spatial memory, social awareness, recognition, & general smarts. Peacock Blennies are often mildly aggressive, & very territorial. Once they have found a crevice, rock, or other space they claim as home, they will fight with vitriolic aggression against any other creature who attempts to invade. In aquarium settings, they do not manage well with roommates of both their species & other animals, & prefer having their own space. Towards humans, they are usually skittish, with a tendency to retreat when humans approach. Individuals are poor swimmers who primarily inhabit the benthic zone, meaning the seafloor. It is important to understand that fish do not sleep in the same way humans or mammals do. Blennies will enter states of reduced activity as well as reduced metabolism during nights, but this is not comparable to the deep extended periods of rest that mammals will enter. While in their states of reduced activity, they will keep their brain partially active in order to be able to escape potential predators. Peacock Blennies will consume a variety of bottom-dwelling organisms such as algae, bivalves, sponges, crustaceans, sea snails, chitons, amphipods, isopods, insects, echinoderms, & fish eggs. Individuals are elongated, with a lighter brown base, larger brown stripes, bulky heads, & dotted white polka dots. Males tend to have bulkier heads, with brighter polka dots. During breeding season, males will grow fleshy protruding crests off the top of their heads to attract females. Thankfully, Peacock Blennies (Salaria pavo) are classified as Least Concern by the IUCN Red List. Their population is presently stable. A photograph of a male Peacock Blenny with a fleshy crest extending from its head. Credit to Roberto Pillon. The Reproductive Strategies of the Peacock Blenny Peacock Blennies reproduce via sexual reproduction, & are unable to reproduce asexually. Their mating system can be described as polygynous, as males will breed with multiple females every season. Their breeding season can broadly be defined as March through September, peaking from May to July. Individuals reach sexual maturity at approximately 1 year old. Upon reaching sexual maturity, males will begin searching for females to mate with, & grow fleshy crests off the top of their foreheads. Males will attract females through a series of nods & undulations. After attracting a suitable female, the female will lay her unfertilized eggs inside a nest, typically on a rock or in a crevice, & the males will release their sperm on top of the eggs. Males will then guard the eggs from other females, preventing harm from coming their way. They will use their fins to flush oxygenated water over their eggs, & release an antibacterial mucus in order to defend against microbial infections. Alternatively, smaller males, known as sneaker males, will mimic females to sneak past more dominant males in order to fertilize eggs. After 6 to 15 days, the baby peacock blennies will hatch, ready to face the sea. Upon hatching, the fry will have no further parental involvement. The Distribution of the Peacock Blenny Peacock Blennies are distributed throughout the Mediterranean Sea, Black Sea, Adriatic Sea, & Red Sea after colonizing it via the Suez Canal. Individuals are typically found in shallow sheltered waters that contain rocks or seaweed meadows, usually 0 to 6.56 feet (0 to 2 meters) in depth. They are known to inhabit both brackish, & saltwater, with the ability to tolerate extremes on both ends. Individuals are not known to be migratory. The Scientific Aspects of the Peacock Blenny In the wild, Peacock Blennies are known to carry the parasite Myxidium parvum, a myxosporean parasite. Myxosporea is a group of microscopic parasites belonging to the group Cnidaria, a group which includes jellyfish, sea anemones, & coral. Myxosporeans are known to affect both freshwater & saltwater species, typically attacking the internal organs. They require an intermediate host before they enter the Peacock Blenny. Myxidium parvum is primarily limited to the Black Sea population of the Peacock Blenny. It also affects other blenny species in the region, such as the Tentacled Blenny. It typically attacks the gall bladder of its hosts. Individuals have a single row of small razor-like teeth on their upper & lower jaws, along with larger curved canine-like teeth at the back of their mouths. These teeth are used for devouring small invertebrates, fish eggs, & algae. Their phylum is Chordata, meaning that they developed these 5 characteristics all species under the phylum of chordata develop 5 similar characteristics either in adulthood or as juveniles. The characteristics that they develop include a notochord, dorsal hollow nerve cord, endostyle or thyroid, pharyngeal slits, & a post-anal tail. Their class is Actinopterygii, this means that they are ray-finned fish. This also means that their actinopterygian fin rays attach directly to the proximal or basal skeletal elements. This class comprises over 50% of living vertebrate species. Their order is Blenniformes. A universal trait of this order is that the tail fin is rounded, & the dorsal fin is continuous. Their family is Blenniidae, commonly known as Combtooth Blennies. Combtooth Blennies typically have blunt heads, large eyes, elongated bodies, & live in the benthic zone of the sea. Their genus is Salaria, & their scientific name is Salaria pavo. A photograph of a Peacock Blenny in a rocky reef. Credit to Roberto Pillon. Directories / Credits Citation No. 1: “Peacock Blenny”, Written by Unknown, & Published at an Unknown Date. Published by ReefArchive. https://www.reefarchive.com/fish/blennies/peacock-blenny Citation No. 2: “Peacock Blenny”, Written by Unknown & Published at an Unknown Date. Published by Underwater Enterprises. https://divemalta.com/marine-life/bony-fish/peacock-blenny/ Citation No. 3: “Peacock Blenny”, Written by Unknown & Published at an Unknown Date. Published by the Paul Richard Oceanographic Institute. https://www.institut-paul-ricard.org/en/especes_aquarium/peacock-blenny/ Citation No. 4: “Peacock Blenny”, Written by Unknown & Published at an Unknown Date. Published by Animalia. https://animalia.bio/peacock-blenny Citation No. 5: “Euro-Mediterranean Silk Road Passes Through Trieste & Istanbul”, Written by Paolo Deganutti, & Published on November 21st, 2025. Published by Plǔralia. https://pluralia.com/en/a/euro-mediterranean-silk-road-passes-through-trieste-and-istanbul/ Citation No. 6: “The Research Centers in Trieste”, Written by Unknown, & Published on August 18th, 2017. Published by the Embassy of Italy. https://ambriga.esteri.it/en/news/dall_ambasciata/2017/08/informazioni-sulla-realta-scientifica-2/ Citation No. 7: “Salaria pavo”, Written by Unknown, & Published at an Unknown Date. Published by FishBase. https://fishbase.se/summary/Salaria-pavo.html Citation No. 8: “Salaria pavo”, Written by Kasper Hareskov Tygesen, & Published at an Unknown Date. Published by ReefApp. https://reefapp.net/en/encyclopedia/salaria-pavo Citation No. 9: “Peacock Blenny: Salaria pavo”, Written by Antonio Di Natale, Murat Bilecenoglu, Michel Bariche, Can Bizsel, Enric Massuti, Jeffrey Williams, & Matthew Craig, & Published in 2014. Published by the International Union for the Conservation of Nature. https://www.iucnredlist.org/species/185175/1776635 Citation No. 10: “Do Blenny Fish Sleep? Interesting Facts About Blenny Fish”, Written by Kai Brooks, & Published on November 28th, 2025. Published by Knolcrest Lodge. https://knolcrestlodge.com/do-blenny-fish-sleep-pk683/ Citation No. 11: “Ecological modulation of reproductive behaviour in the peacock blenny: a mini-review”, Written by J. L. Saraiva, D. Gonçalves, & R. F. Oliveira, & Published on May 15th, 2012. Published by Fish Physiology & Biochemistry. https://ise.usj.edu.mo/wp-content/uploads/2018/11/Saraiva_et_al_2013.pdf Citation No. 12: “A male sexually dimorphic trait provides antimicrobials to eggs in blenny fish”, Written by Eva Giacomello, Daniela Marchini, & Maria B. Rasotto, & Published on May 26th, 2026. Published by Biology Letters. https://pmc.ncbi.nlm.nih.gov/articles/PMC1686180/ Citation No. 13: “Molecular and morphological description of Myxidium parvum (Cnidaria) from Salaria pavo (Blenniidae) in the Black Sea”, Written by C. T. Gürkanli, S. Okkay, Y. Çiftçi, & A. Özer, & Published on November 26th, 2021. Published by Parasitology International. https://www.sciencedirect.com/science/article/abs/pii/S1383576921002385 Strategic Partnerships Reel Guppy Outdoors SharkedSkooler Marine Enthusiasts Podcast Cash Daniels Tides of Tomorrow The Open Book, Topanga Olivenbaum Music Pitfire Artisan Pizza Three J’s Kitchen Presence News Our Loyal Patrons P. R. Ochoa

A striking photograph of the beautiful blue Baltic Sea. Credit to Michael Held. Modern technology allows us to easily find information about the history of any region. We can visualize what it looked like thousands and even millions of years ago and how it changed over the decades to finally be what we know today. This knowledge is acquired by analyzing data from sediment samples taken from the ground. This was the method used to establish the history of the Baltic Sea. Even though this particular sea is young, being only about 8,000 years old, it still has its own history and unique characteristics, which will be discussed in this article. The Baltic Sea was first a region covered entirely by an ice sheet. 20,000 years ago the ice glaciers originating from Scandinavia started spreading east and south, deepening the region by dragging large rocks and smaller pieces of stone and clay. The ice slowly melted, filling the created basin with water and forming what is now known as the Baltic Ice Lake. With the ice melting, the basin continued to fill with water until it started to overflow, causing the excess freshwater to travel directly into Skagerrak (strait between Denmark, Norway, and Sweden). When the outflow finally stopped, seawater was able to reach the lake through the newly created mid-Swedish channel. That is when the salinity levels allowed the bivalve Yoldia to flourish, thus creating the name Yoldia Sea, lasting a short period of time. A photograph of Portlandia arctica, formerly known as Yoldia arctica. This mussel used to colonize the area which modernly occupies the Baltic Sea. Credit to Amgueddfa Cymru & the National Museum of Wales. The next step in its history was the Ancylus Lake period - a time when the freshwater basin covered an area larger than today’s Baltic Sea. This period was also relatively short, as about 8,000 years ago, seawater flowed into the lake, creating what we know today - the Baltic Sea. An illustration showcasing the extent of the Ancylus Lake, along with major cities in the region. Note that Stockholm, as well as Helsinki would be underwater. Credit to GEOMAR. So, what makes this particular sea unique? The basin itself is about 1600 km long, with an average depth of 55 metres, the deepest point reaching 459 metres. It is one of the largest brackish inland seas by area. This means that this sea’s water contains more salinity than that of freshwater, but less than that of seawater. This particular characteristic is one of the most important pillars of shaping its biodiversity. Unlike other seas, the Baltic Sea has an exceptionally low biodiversity. Low salinity is caused by many freshwater points of flow (rivers) and narrow connections to the salty ocean. This means that most marine species cannot survive because the water is too fresh, and most freshwater species cannot survive because it is too salty. Therefore, there are a limited number of adaptable species that can thrive in this basin. The relatively young age of this sea also means that species have not had enough time to fully adapt to these unique conditions. The Baltic Sea is shallow and holds a relatively small volume of water, causing it to be highly sensitive to temperature changes and pollution. Any pollutants and chemicals that enter the sea remain trapped inside for decades - the narrow connection to the open ocean means that water exchange is extremely slow, taking it roughly 40 years to flush out. When it comes to tides, they are usually less than 10 centimeters, which makes it difficult to wash away debris and mix nutrients, having to rely on wind-driven currents to move water. On top of that, the Baltic Sea contains some of the largest human-caused marine dead zones in the world. In these zones, benthic life suffocates and dies, leaving an underwater oxygen dead zone populated only by anaerobic bacteria. The Baltic Sea is one of the most unique seas. Its low biodiversity doesn’t make it interesting for many marine biologists, however, many who decide to appreciate its beauty find that it has much more to offer than it shows. From its history to the species living in it and to many historical wonders that hide beneath it, in this series we will slowly unravel its beauty, hoping to shed light on this undermined basin. Tales from the Baltic - a vow to the currents that carried my childhood. A photograph depicting the haunting beauty of the Baltic Sea. Credit to Public Domain. Directories / Credits Citation No. 1: “The Origin of the Baltic Sea”, Written by Robert Spielhagen, and Published at an Unknown Date. Credit to GEOMAR. https://www.geomar.de/en/discover/the-origin-of-the-baltic-sea Citation No. 2: “State and Evolution of the Baltic Sea (1952-2005)”, Written by Rainer Feistel, Günther Nausch, and Norbert Wasmund, and Published in 2008. Credit to John Wiley & Sons. https://www.researchgate.net/profile/Rainer-Feistel/publication/275645919_Feistel_2008_frontmatter/ Citation No. 3: “Treatise of Marine Ecology and Paleoecology - Chapter 24: Baltic Sea”, Written by Sven G. Segerstråle, and Published on December 1st, 1957. Credit to The Geological Society of America. https://pubs.geoscienceworld.org/gsa/books/edited-volume/73/chapter-abstract/3787153/Chapter-24-Baltic-Sea?redirectedFrom=fulltext Citation No. 4: “Water in motion”, Written by Unknown, and Published at an Unknown Date. Published by MarineFinland. https://itameri.fi/en/nature-and-how-it-changes/characteristics-of-water/hydrology/. 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Today’s chart is a primordial 169-year-old map of the South Atlantic Ocean, featuring both the coasts of South America & the coast of West Africa. The chart is fairly large, at 51 inches long by 38 inches wide. It is in beautiful condition for its age, apart from a small hole in one of its compass roses. Its blemishes & soiling are consistent with use at sea. In today’s article, we are going to examine this antique map, discuss it, & analyze it. With that being said, let’s delve into the visually magnificent, cool, & unforgiving waters of the South Atlantic Ocean! The Chart A 169-year-old antique nautical chart produced by James Imray & his son, James Frederick Imray. Credit to raremaps.com. This chart features most of South America, part of West Africa, the South Atlantic Ocean, & the Eastern Pacific Ocean, from the Equator to 65° South latitude. It is packed with information, & includes multiple archipelagos such as the Galapagos, South Shetland, South Orkney, Sandwich, & Falkland Islands. It is beautifully decorated, with intricate calligraphy all over. 10 compass roses are littered across the map, which would have been used by navigators to orient themselves as to what their position was. In the Atlantic, we can see “Reid's Shoal (1842)”, located near Lagoa dos Patos, Brazil, while in the Pacific we can see “Powsland Reef? (1853)”. Coral reefs, rocky reefs, & shoals pose many issues to passing ships, as they may cause hull damage to unsuspecting vessels which strike them. Hull damage can catastrophically alter the structural integrity of the ship, & may cause it to capsize & sink. As such, it is of critical importance to have these properly labelled. Weather conditions are featured prominently in the chart, with the infamous Drake Passage labelled with “Storms and almost constant rain prevail here”. Other areas, such as the South Sandwich Islands, are labelled with “High Land covered with snow”. South of 60° Latitude, reports of field ice from various years can be seen. Field ice is defined as an expanse of sea ice or lake ice on a body of water which is so large, that the other side may not be seen from the masthead of a ship. It is relatively flat, & according to the Manual of Ice, must be more than 6.3 miles (10 kilometers) across. This would have been extraordinarily useful to any sailor traversing icy Antarctic waters, as field ice could severely damage or even sink a vessel. Information about currents near Brazil & Cape Horn can be found on the left side of the map, while information about the Lagullas Current, South African Current, & Southern Connecting Current can be found on the right side. According to the chart, the Lagullas Current is set westward around the Cape of Good Hope, & varies in velocity. The South African Current is a strong broad extension of the Lagullas Current, running northwest. The Southern Connecting Current flows to the east between 30° & 40° South latitude. It is also broad, & quite strong. Illustrations of Tristan de Cunha, West Falkland, Gough Island, False Cape Horn & the Cape Horn can all be seen near the bottom. Each coastline is drawn with attention to detail. An Analysis of the Chart This chart was manufactured in 1857, by the Scottish pair of hydrographers James Imray & his son, James Frederick Imray. Imray Sr. began his business as a bookseller in 1818. He shared his office space with a nautical chart seller, Robert Blachford, & eventually went into business with his successor, Michael Blachford. He eventually bought Blachford out in 1846, & brought his son in as a partner in 1854. In 1899, the firm was sold to Norie & Wilson. Nowadays, the combined firms trade under the name Imray, Laurie, Norie, & Wilson, keeping the name alive over a century later. The map was created & published in London, as that is where the cartographic office of Imray was located. The chart is titled “General Chart of the South Atlantic or Ethiopic Ocean From The Equator to 65° South Latitude according to the latest Surveys & Observations”. Upon reviewing the concise details printed, publishing house, & era that it was manufactured in, this chart was likely manufactured using lithography. Lithography is a method of printing that arose in the 1820s, & remained the most popular method of printing in both color & grayscale until the early 1960s, when more efficient methods became available. Although it has existed since the mid-1790s, it took a long time to gain popularity in Europe due to technical difficulties. It only began gaining commercial popularity in the early 1820s. It is still used for certain kinds of printing today, such as fine art printing, however, digital printing is far more common. In the lithographic method, the artist will draw directly onto a printing surface, such as zinc, or copper, until they are satisfied with the drawing. After this, the surface will be covered with a chemical etch, which will bond it to the surface. With this process, the blank areas will attract moisture to the plate & repel the lithographic ink, while the areas that are drawn on will hold the ink. Water is then wiped onto the unpainted areas to help prevent the ink from deviating. After the image is inked, the paper is laid over it & covered with a tympan, & the tympan is pressed down. Finally, these materials pass through the scraper bar of the litho-press. Afterward, an exact copy of what was supposed to be printed is revealed. It is extremely useful for making high-resolution prints in high quantities. A sunlit photograph of Cape Horn, Tierra del Fuego, Chile. This area is prominently featured on today’s chart. Credit to Wikimedia Commons. Directories / Credits All credit for this map analyzed today goes to Rare Maps, a California rare & antique maps store. To purchase this chart, antique atlases, or other cartographic objects, please visit www.raremaps.com. To be clear, this is not an advertisement for Rare Maps, as we do not have a partnership with them. Strategic Partnerships Reel Guppy Outdoors SharkedSkooler Marine Enthusiasts Podcast Cash Daniels Tides of Tomorrow The Open Book, Topanga Olivenbaum Music Pitfire Artisan Pizza Presence News Our Loyal Patrons P. R. Ochoa

We are a marine biology nonprofit organization, based in the United States. Our goals are to protect the ocean through education, conservation, & public involvement. This page is specifically for the events calendar. All planned events will be added to this calendar before they are announced in any articles.

Santa Monica Marine Flora & Fauna Survey Many Citizens of Santa Monica often do not view their area as biodiverse when it comes to the sea. We aim to bridge the gap between the people & the ocean, cause them to care more about their marine life, help them to foster an interest in California’s underwater ecosystems, & move towards a more sustainable, more ecologically friendly future. Through this program, people are encouraged to report their findings of marine animals, as well as plants around Santa Monica & Santa Monica Bay to us through the attached form. If you see an ocean creature, such as a plant or animal, that you wish to contribute, send it to us through the attached form, & it'll be reviewed & added as soon as possible! In each submission, the person should include where the photograph was taken, the approximate size of the subject, as well as any additional information they feel will be helpful. For those looking to see animals already cataloged, all marine specimens are featured below. Submit A Marine Specimen Now Seaweed Seabirds Bivalves

Adopt-A-Cleanup Program For individuals and corporations who wish to showcase their environmental values more meaningfully, we offer an Adopt-A-Cleanup program in which willing sponsors can sponsor one of our public cleanups. These sponsors can be individuals or companies with environmental values, looking to make a meaningful impact. Each sponsor in this program will receive; A certificate of gratitude from our organization. Your company's logo, or your name if you are an individual sponsor, on all the cleanup promotionals. A special thanks in any social media posts or articles about the cleanup. Please see this informational document for more information , & don't hesitate to email us at thepersaudfoundation@gmail.com if you are interested in sponsoring a cleanup, or have any questions at all,