European Eel (Anguilla anguilla), family Anguillidae, order Angulliformes, River Severn, England, UK
CRITICALLY ENDANGERED.
photograph by Neil Aldridge

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European Eel (Anguilla anguilla), family Anguillidae, order Angulliformes, River Severn, England, UK
CRITICALLY ENDANGERED.
photograph by Neil Aldridge
schimdtocean on instagram
Atlantic Puffins. The adult puffins return to the cliffs around 21:00 to bring food back to the nests, and the golden hour light is perfect for photographs.
photos by me. 2025-06-07, Runde, Norway. Our trip was so, so wonderful.
Bow before Z. rex! 🦐 Better known as the emperor shrimp (Zenopontonia rex), this tiny crustacean can be found throughout tropical waters in the Indo-Pacific. Notice its colorful “throne?” This species is a hitchhiker that can most often be found riding on the backs of marine organisms like sea cucumbers and nudibranchs! Thanks to this living arrangement, the shrimp is able to move from location to location with ease and can more effectively avoid predators. What’s in it for the nudibranchs and sea cucumbers? Scientists think the emperor shrimp might “clean” its hosts by removing harmful parasites, but this has yet to be determined.
Photo: Julian Hsu, CC BY-NC 4.0, iNaturalist
Striped marlin hunting sardines. From Blue Planet - Open Ocean (2001).
Blue Dragon Nudibranch (Glaucus atlanticus), family Glaucidae, Sydney, Australia
photograph by Kristian Laine
Hermit crab By: Doug Perrine From: Natural History Magazine 1989
Бабочка-енот, лунула — Chaetodon lunula. Бабочка-енот, лунула (Chaetodon lunula, raccoon butterflyfish) — узнаваемая рыба бабочка с красивой, выразительной окраской. Максимальная длина лунулы 21 см. Тело и плавники окрашены в желтый цвет, темнеющий ближе к спине и иногда переходящий практически в черный. На боках от грудных плавников к хвосту идут диагональные темные полосы. На морде контрастная маска: черная полоса, проходящая через лоб и маскирующая глаза, и следующая за ней белая, почти такой же ширины. От заднего края этой белой полосы к основанию спинного плавника тянется сужающаяся черная полоса, окаймленная светло-желтыми участками. На хвостовом стебле округлое черное пятно, переходящее в темное основание спинного плавника. Молодые отличаются более светлым, белесым рострумом и округлым черным пятном на задней лопасти спинного плавника.
Населяет мелководные лагуны и внешние склоны рифов. Держится на глубине до 30 метров, парами или небольшими группами. Одна из немногих бабочек, ведущих ночной образ жизни. Питается преимущественно голожаберными моллюсками, кольчатыми червями и другими донными беспозвоночными, однако нередко поедает коралловые полипы и водоросли. Молодые предпочитают каменистые участки на прибрежных рифах в приливно-оливной зоне.
Дайверы и другие любители коралловых лесов могут встретить этот вид бабочек в лагунах и на внешних склонах рифов Индо-Пацифики: от востока Африки, у Мальдивских островов, далее огибая Австралию, где они обитают у берегов Индонезии, Папуа-Новой Гвинеи и Фиджи, и дальше в Океанию, где их можно лицезреть у Гавайев, а с юга – недалеко от берегов Таити — и это лишь малая доля их мест обитания. Иногда они встречаются на юго-востоке Атлантического океана.
Raccoon butterflyfish, lunula — Chaetodon lunula. Raccoon butterflyfish, lunula (Chaetodon lunula, raccoon butterflyfish) is a recognizable butterfly fish with a beautiful, expressive coloration. The maximum length of the lunula is 21 cm. The body and fins are colored yellow, darkening closer to the back and sometimes turning almost black. On the sides from the pectoral fins to the tail there are diagonal dark stripes. On the muzzle there is a contrasting mask: a black stripe passing across the forehead and masking the eyes, and the following white one, almost the same width. From the rear edge of this white stripe to the base of the dorsal fin there is a tapering black stripe, bordered by light yellow areas. On the caudal peduncle there is a rounded black spot, turning into a dark base of the dorsal fin. Juveniles have a lighter, whitish rostrum and a rounded black spot on the back lobe of the dorsal fin.
Inhabits shallow lagoons and outer reef slopes. Stays at depths of up to 30 meters, in pairs or small groups. One of the few butterflies that lead a nocturnal lifestyle. It feeds mainly on nudibranchs, annelids and other bottom invertebrates, but often eats coral polyps and algae. Juveniles prefer rocky areas on coastal reefs in the tidal-olive zone.
Divers and other coral enthusiasts can encounter this butterfly species in the lagoons and outer reef slopes of the Indo-Pacific: from eastern Africa, near the Maldives, around Australia, where they live off the coasts of Indonesia, Papua New Guinea, and Fiji, and on into Oceania, where they can be seen off Hawaii and, to the south, near the coast of Tahiti, to name just a few of their habitats. They are also occasionally found in the southeastern Atlantic.
Источник: //t.me/+E4YBiErj0A8wOGUy, //www.aqua-shop.ru/live/ morskie_ryby/shchetinozubyue_ryubyu-babochki/prod_H3h60_M, //es.pinterest.com/pin/729301733429659096/, ://vk.com/wall-43552186_885, //www.posterazzi.com/hawaii-school-of-racoon-butterflyfish-chaetodon-lunula-along-reef-posterprint-item-vardpi1989862/.
official fish post
A manatee enjoys the crystal-clear waters of the Homosassa River.
Location: Florida
Photographer: Sylvie Ayer
Ocean Photographer of the Year
Lobe finned versus ray finned fish
Short answer: ray finned fish evolved from from lobe finned fish
Long answer: Lobe finned fish were dominant for a long time in the waters before they climbed up onto land and evolved into you, dear reader. This occurred around 400 MYA (million years ago). Sometime before that, about 348 MYA, ray finned fishes had evolved, but remained relatively small. This was until the permian mass extinction (290-245 MYA), when many lobe finned fish died out, and ray finned fishes (teleosts) were left to flourish and evolve to fill the empty evolutionary niches. The only lobe finned fish left behind today are the elusive coelacanths and lungfish.
@marinebiologyshitposts @fuckyeahcoelacanths
Daily Fish 41 - Lumpfish
Photo by peskynewt on Flickr
baby tripod fish (bathypterois grallator) | source
Creature 66
Whitemargin stargazer
This fish can be found in the Indo Pacific region inhabiting reef flats. It buries itself in the sand so only its eyes can be seen, and ambushes its prey, sucking them in whole. Whitemargin stargazers can produce electric shocks, sometimes up to 50 volts, from an organ located behind their eyes.
fact sources: marine biology learning center and whatsthatfish.com
image source: australian geographic
A leopard seal (Hydrurga leptonyx) emerges from the kelp on Bird Island, South Georgia
by Derren Fox
Poissons - Félix Bracquemond - 1866 - via The British Museum
Flashlight Fish Appreciation Post
Anomalopidae (lanterneye fishes or flashlight fishes) are a family of fish distinguished by bioluminescent organs located underneath their eyes, for which they are named.
These light organs contain luminous bacteria and can be "shut off" by the fish using either a dark lid or by being drawn into a pouch. They are used to communicate, attract prey, and evade predators.
These rarely seen fish are nocturnal and found in the Indo-Pacific Ocean and Caribbean Sea.