The mysterious Greenland Shark.

They can be as big as great white sharks, but that’s about as far as the comparison goes. Their maximum speed is a lethargic 1.7 miles per hour, many are almost blind, and they are happy to eat rotting carcasses. They may be common throughout the ocean, but you’ve probably never heard of them. Meet […]

Moray Eel visits the Dentist.

The Dentist Observing the interactions between deep sea marine life is a visual feast. So many activities unfold in front of your eyes like this moray eel having its dental hygiene looked after by a cleaner shrimp. Image Credit: Photograph by Lilian Koh, Singapore. Member since 2018. Source: Dentist | Smithsonian Photo Contest | Smithsonian

Catching Shrimp in the Morning Dew.

Image Credit: Photograph by Quoc Loc. Livelihoods in the morning dew A farmer can be seen catching shrimp in the morning dew on Quan Son lagoon, a district of Hanoi in the Red River Delta region of Vietnam. Each day, she can catch up to two baskets of shrimp, and each basket can be sold […]

What causes these shark species to glow green?

The lighter areas on the skin of this chain cat shark contain a special molecule that absorbs the ocean’s blue light and turns it into green light. Scientists have figured out why certain species of shark can absorb blue light in the ocean and essentially turn the light green, making them appear to glow. It’s […]

Bringing the Ocean Home.

Of all Philip Henry Gosse’s works, the most successful was The Aquarium, in which he described his observations of coastal life and — a year after establishing the first public aquarium at the London Zoo — gave his readers instructions on how to build a miniature ocean of their very own. A saltwater aquarium, he […]

The Green Goliath Grouper.

Photograph by David Doubilet, National Geographic The German ichthyologist M.H.C. Lichtenstein described the goliath grouper as Serranus itajara in an 1822 publication regarding the natural history of Brazil. In an 1884 work, “The fishes of the Florida Keys,” David Starr Jordan proposed the inclusion of the goliath grouper in Epinephelus (Bloch 1793) and this combination […]

Last South African coelacanths threatened by oil exploration.

Coelacanths have remained almost unchanged for 420m years. Photograph: Alamy Stock PhotoBright blue, Older than dinosaurs and weighing as much as an average-sized man, coelacanths are the most endangered fish in South Africa and among the rarest in the world. Barely 30 of these critically-endangered fish are known to exist off the east coast of […]

Siamese Fighting Fish, Thailand.

Bangkok-based photographer Visarute Angkatavanich (previously) continues to capture some of the most elegant portraits of fish we’ve seen. His intimate, crystal-clear photos of Siamese fighting fish (betta) make it seem as though they are suspended in air instead of water. Angkatavanich recently told Popular Photography that he only started photographing the fish after encountering them […]

The Fins of the Ribbonfish.

Fins with transparent membranes give the ribbonfish its name. Image Credit: Joshua Lambus. Up to 2m long the ribbonfish is an elegant deep-sea creature. Named for the elaborate fins that ripple delicately after them as they swim, ribbonfish from the genus Trachipterus are found all over the world. There are six known species, and Australia’s […]

The spectacular Achilles Tang.

Achilles Tang – Photograph by Brian Skerry, National Geographic In other places around the world, coral has been decimated by bleaching and disease, but the southern Line Islands’ reefs retain their resilience. Scientists believe the key to coral health is intact ecosystems, where all the native species—including planktivores such as the vividly marked Achilles tang […]