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A photo of a squid using bioluminescence to hide in the deep sea.
overview

Bioluminescence

You may have seen the sparkle of fireflies on a summer’s night. The fireflies...
April 2018
The Japanese spider crab may be big but it is not invincible.
Photo

Japanese Spider Crab

The Japanese spider crab is a large catch for any fisherman. With a leg span of 13...
The blue lined octopus can be deadly, so it is best to stay away.
Photo

The Dangerous Blue Octopus

The blue-lined octopus may be small, growing to at most 15 cm, but it can be...
It's a pygmy seahorse (Hippocampus bargibanti), found in Indonesia's biodiverse Coral Triangle and one of the smallest seahorse species in the world! They can change colors like a chameleon to blend into their environment. This helps to protect them from p
Photo

Can You Spot the Seahorse?

It's a pygmy seahorse (Hippocampus bargibanti), found in Indonesia's biodiverse...
This day octopus (Octopus cyanea) has shaped itself like seagrass or some coral so hide from predators or stalk prey.
Photo

Camouflaged Octopus Blends In

Octopuses can change the texture and color of their skin to blend in with their...
Winner of the ‘best camoflauge’ contest, the nudibranch Scyllaea pelagica is betrayed only by motion.
Photo

Seaslug Camouflages in Seaweed

Winner of the ‘best camouflage’ contest, the nudibranch Scyllaea pelagica...
Brown grass shrimp on a floating piece of seaweed.
Photo

Brown Grass Shrimp

Another common species of sargassum shrimp, Leander...
Jellies in the Class Hydrozoa are transparent and easily overlooked.
Photo

Transparent sea jelly

Many jellyfish in the class Hydrozoa, such as this hydromedusa Aglantha digitale,...
A veined octopus sits inside a vacant bivalve shell, which it uses as a portable shelter, in the Philippines. This is one of the few examples—if not the only example—of tool use in invertebrates.
Photo

Veined Octopus at Anilao Batangas Pier, Philippines

The veined octopus (Amphioctopus marginatus), also known as the coconut octopus,...
Photograph of a transparent comb jelly against a dark sea.
Photo

Bioluminescent Comb Jelly

Like many deep sea creatures, this tiny comb jelly (Bathocyroe fosteri) has a...
This crab was collected on a NOAA/MAR-ECO cruise to the Mid-Atlantic Ridge in 2009.
Photo

Spiny Deepsea King Crab

This crab (Neolithodes sp.) was collected on a NOAA/MAR-ECO cruise to the...
Giant eyes spot prey. Huge claws grab the prey, and a tiny mouth rips it to shreds.
Photo

Phronima

This tiny, shrimplike creature is no more than 2.5 centimeters (1 inch) long, but...

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