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Our world under the waves @worldunderthewaves.bsky.social · 10/10/2026

Two colours, same species. These Taylor’s sea hares (also known as eelgrass sea hares and zebra leafslugs) crawl on seagrass and eat the epiphytic algae growing on their blades. Effectively acting as natural weedkillers. #seaslugs #nudibranchs #molluscs

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Our world under the waves @worldunderthewaves.bsky.social · 05/10/2026

Happy World Habitat Day 🧊 Even sea ice can provide valuable living space, particularly for the masses of diatoms growing underneath (hence the yellow stains). Krill will then feed on these microalgae, the same krill that whales often feast on in polar waters. #diatoms #phytoplankton

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Our world under the waves @worldunderthewaves.bsky.social · 04/10/2026

Happy World Animal Day 🪱 The bootlace worm is the ocean’s longest animal with confirmed lengths in excess of 30m (5-15m is more usual and claims of 55m have been made). They also produce a powerful neurotoxin that is effective against crabs and cockroaches. #worms

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Our world under the waves @worldunderthewaves.bsky.social · 27/09/2026

Happy World Tourism Day 🌊 Celebrating all the ecotourism opportunities afforded to us by the sea. Be it the icy wildernesses, coral reefs and animal superstars. May it continue (responsibly). #ecotourism #corals #glaciers #sharks #whales

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Our world under the waves @worldunderthewaves.bsky.social · 26/09/2026

Happy World Maritime Day 🛶 This balsa wood raft was used during the 1947 kon-tiki expedition when a six man team sailed across the Pacific Ocean from Peru to Polynesia. Proving it was possible for the people of Fatu Hiva to be descended from the South American continent. #polynesia #sailing

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Our world under the waves @worldunderthewaves.bsky.social · 20/09/2026

***NEW ARTICLE COMING SOON*** All about the secret lives of seahorses!

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Our world under the waves @worldunderthewaves.bsky.social · 16/09/2026

These days, pelicans are best known for being big water birds with even bigger mouths. But during the late Middle Ages and early Renaissance, the mother pelican piercing her own chest, to feed her offspring with her own blood, was a Christian symbol of loving sacrifice. #pelican #seabird #symbolism

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Our world under the waves @worldunderthewaves.bsky.social · 12/09/2026

Always be wary when long-spined sea urchins are around. Their venom is, luckily, mild and non-fatal to humans, but those stinging spines are bound to hurt! #urchins #echinoderms

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Our world under the waves @worldunderthewaves.bsky.social · 09/09/2026

The mighty manta ray can boast a wingspan of nearly 7 metres! Yet despite their colossal size, they feed on tiny zooplankton using specialised gill rakers. Hardly befitting of their alternative name, the “devil fish”. #manta_ray

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Our world under the waves @worldunderthewaves.bsky.social · 07/09/2026

Media Monday #103 ✍️ That’s not an oyster emerging from those shells. But you can find this rather odd revelation, along with fish in waistcoats and sharks with saddles being ridden like horses, in “The Pearl and the Pumpkin”, published in 1904. #International_Literacy_Day (albeit a day early)

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Our world under the waves @worldunderthewaves.bsky.social · 05/09/2026

The golden octopus 🐙 Or rather a golden Octopus Frontlet (i.e. a headdress) crafted during the Moche civilisation (300-600 A.D), then looted from a burial site in what is now northern Peru. #octopus #ancient_civilisations

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Our world under the waves @worldunderthewaves.bsky.social · 29/08/2026

A brief window into elasmobranch diversity 🦈 Courtesy of Ichthyologie; ou, Histoire naturelle des poissons : En six parties avec 216 planches dessinées et enluminées d'après nature. Published in 1796. #sharks #rays #elasmobranchs

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Our world under the waves @worldunderthewaves.bsky.social · 26/08/2026

Some designs are so good that they persist for millions of years. This extinct sun star from the mid-Miocene (11.5-16 million years ago) and modern day sun star look pretty similar. Naturally, their exact inner workings would’ve worked in slightly different ways. #starfish #fossils

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Our world under the waves @worldunderthewaves.bsky.social · 24/08/2026

Media Monday #101🎤 Known simply as “Nemo”, this Swiss singer-songwriter rose to fame when they won the 2024 Eurovision Song Contest. Sharing a name with a famous fish no doubt drew some attention at the time.

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Our world under the waves @worldunderthewaves.bsky.social · 23/08/2026

Put “sea” in front of any name and you can yield anything. Coastal plants (sea cabbages) Light bending worms (sea mice) Prehistoric monsters (sea scorpions). Leg obsessed creepy crawlies (sea spiders) #worms #plant_life #fossils #spiders

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Our world under the waves @worldunderthewaves.bsky.social · 20/08/2026

Happy (belated) World Photography Day 📷 From the lagoons and coastlines of 1960s Hawaii. #Hawaii #lagoons

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Our world under the waves @worldunderthewaves.bsky.social · 15/08/2026

Many fish move close to shore in order to spawn, but these striped bass leave the ocean entirely, albeit temporarily, to release and fertilise millions of eggs in tidal, freshwater rivers. #fish #bass #migration

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Our world under the waves @worldunderthewaves.bsky.social · 12/08/2026

Stingrays have some pretty impressive namesakes to boast about. Including: - A 1970s American sports car. - A video game graphics processor. - A planetary nebula (the size of 130 solar systems). #stingray #elasmobranch

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Our world under the waves @worldunderthewaves.bsky.social · 10/08/2026

Media Monday #99 ⚓️ “In The Abyss” by H.G Wells, first published in 1986. In a strange case of life imitating art, a real-life bathysphere was launched into the ocean depths during the 1930s. #deep_sea #HG_Wells #classicscifi

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Our world under the waves @worldunderthewaves.bsky.social · 09/08/2026

Happy International Day of the World’s Indigenous People 🌊 Many of whom, rely on the ocean. -Native Americans sailing in the San Francisco Bay -Eskimo women cleaning salmon by the Ugashik River -Aboriginal Australians hunting swans -Seaweed harvests transported through Tanzania #Indigenous #fishing

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Our world under the waves @worldunderthewaves.bsky.social · 05/08/2026

Happy National Oyster Day 🦪 Even a single oyster shell can offer valuable habitat for anything from barnacles and keel worms to tiny seaweeds and everything in between. In this case, they’re playing host, albeit on a microscopic scale, to tiny bryozoans. #oyster #microscope

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Our world under the waves @worldunderthewaves.bsky.social · 03/08/2026

Media Monday #98 🎵 British folk rock band “Oysterband” performing live in 2006. Some of their album names also follow the same marine theme, including “Trawler” and “Deep Dark Ocean”. #oyster #folk_rock

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Our world under the waves @worldunderthewaves.bsky.social · 02/08/2026

Tis’ but a scratch ⭐️ A starfish larva with a damaged larval brain would think much the same. (If only we could regenerate our limbs and internal organs as easily). #starfish #regeneration

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Our world under the waves @worldunderthewaves.bsky.social · 30/07/2026

Happy International Day of Friendship. What better day to highlight the cooperative hunting of roving coral groupers and giant moray eels, who work together to complement each other's hunting skills. #groupers #morays

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Our world under the waves @worldunderthewaves.bsky.social · 30/07/2026

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Our world under the waves @worldunderthewaves.bsky.social · 27/07/2026

Media Monday #97 ❄️ “The Walrus Hunter”, from “The frozen zone and its explorers; a comprehensive record of voyages, travels, discoveries, adventures and whale-fishing in the Arctic regions for one thousand years ” Published in 1874, a time when Arctic settlers would hunt whatever they could #arctic

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Our world under the waves @worldunderthewaves.bsky.social · 25/07/2026

Harbour Porpoise v.s. Bottlenose Dolphin The porpoise was definitely the underdog in this attack. #dolphin #porpoise

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Our world under the waves @worldunderthewaves.bsky.social · 22/07/2026

Even some military tanks are named after sea creatures. Such as the Stingray Light Tank, as used by the Royal Thai Army since 1989, and the Sherman Crab Minesweeper, which was used by allied forces during the Second World War. #tanks #history

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Our world under the waves @worldunderthewaves.bsky.social · 20/07/2026

Media Monday #96 🏝️ Hammerhead Shark Island (more commonly known as Stickney Island), an uninhabited island in the Spencer Gulf, South Australia. Even geology has a sense of artistic expression. #sharks #hammerhead #island

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Our world under the waves @worldunderthewaves.bsky.social · 18/07/2026

Shark teeth make for excellent weapon upgrades. This was not lost on the inhabitants of the Gilbert Islands (part of modern day Kiribati). #shark_teeth #islands

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Our world under the waves @worldunderthewaves.bsky.social · 14/07/2026

Happy Shark Awareness Day 🦈 Make sure to raise a glass to these incredible animals. Never forgetting that they are so much more than fish with teeth. #sharks #ocean #animals #shark_awareness_day

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Our world under the waves @worldunderthewaves.bsky.social · 13/07/2026

Media Monday #95 🪵 A fintastic basking shark, carved out of wood and on display at Calgary Farm, Isle of Mull. #sharks

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Our world under the waves @worldunderthewaves.bsky.social · 13/07/2026

Media Monday #95 🪵 A fintastic basking shark, carved out of wood and on display at Calgary Farm, Isle of Mull. #sharks

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Our world under the waves @worldunderthewaves.bsky.social · 12/07/2026

Japan. An island nation with a rich history, it’s little surprise that crabs feature on various cultural artefacts. Including woodblock prints, teabowls and sword guards. #crabs #japan

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Our world under the waves @worldunderthewaves.bsky.social · 09/07/2026

Emperor penguins 🐧 Some of the most dedicated parents in nature. #penguins

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Our world under the waves @worldunderthewaves.bsky.social · 06/07/2026

Media Monday #94 🐙 Once more into the world of political satire. In 1894, Helena and Anaconda were vying to be the state capital of Montana, USA. This illustration from “Helena’s Social Supremacy” implies the city was a greedy octopus seeking to control Montana’s whole economy. #octopuses #satire

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Our world under the waves @worldunderthewaves.bsky.social · 04/07/2026

Blue whales, the largest animals in existence (that we know of) have naturally made their mark out of water. From stamps, scientific illustrations, cartoons and, of course, the skeleton hanging above the grand hall of the Natural History Museum. #whales #megafauna

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Our world under the waves @worldunderthewaves.bsky.social · 04/07/2026

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Our world under the waves @worldunderthewaves.bsky.social · 01/07/2026

Another day, another pufferfish. Specifically a Japanese Puffer (also known as a Tiger Puffer). Naturally, they’re very poisonous, but they also possess a very small genome (the entire collection of genes within their cells), possibly the smallest genome of any vertebrate animal. #pufferfish #genes

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Our world under the waves @worldunderthewaves.bsky.social · 29/06/2026

Media Monday #93 🕷️ Where there be sea spiders, there will eventually be sea spider tattoos. #sea_spider #spider

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Our world under the waves @worldunderthewaves.bsky.social · 26/06/2026

Happy International Angel Shark Day 🪽 The angelshark is one of the most endangered sharks out there (and locally extinct in the North Sea). Fortunately, their stronghold in the Canary Islands has been protected since 2019. #angelshark #shark #endangered

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Our world under the waves @worldunderthewaves.bsky.social · 24/06/2026

Turtle research and conservation is meticulous work. This nest (most likely belonging to a loggerhead turtle) was unearthed and then safely re-buried once the eggs counted. #turtle #nest #eggs

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Our world under the waves @worldunderthewaves.bsky.social · 20/06/2026

Comb jellies (also known as ctenophores and sea gooseberries) are stunning in their natural habitat, but rather gloopy when stranded out of water. #jellies #invertebrates #plankton

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Our world under the waves @worldunderthewaves.bsky.social · 17/06/2026

Not all stingrays roam the seven seas. This white-blotched river stingray (also known as the xingu freshwater stingray) lives only in the rivers of Brazil. #stingray #freshwater

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Our world under the waves @worldunderthewaves.bsky.social · 15/06/2026

Media Monday #91🎨 The Bait Gatherers by William McTaggart, painted at Machrihanish beach in 1878. It’s thought that the seascape was painted first and then the figures were added later.

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Our world under the waves @worldunderthewaves.bsky.social · 14/06/2026

It seems that crabs were quite prevalent in ancient Peru. Appearing in bowls, metal ornaments and even demon bottles that date back to between the 4th and 7th century.

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Our world under the waves @worldunderthewaves.bsky.social · 11/06/2026

Happy Birthday to the late, great Jacques Cousteau. Co-inventor of the self-contained underwater breathing apparatus (SCUBA) regulator, he played such a critical role in opening our eyes to the ocean world.

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Our world under the waves @worldunderthewaves.bsky.social · 08/06/2026

Happy World Ocean Day 🦈 From the stunning blue shark, a species that undertakes the greatest migration of all sharks, travelling around 5,700 miles of sea each year.

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