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Category: Animal of the Deep

Midwater octopus

animal Type Maximum Size 16 cm (6 inches) total length Depth 200–1,200 m (660–3,900 feet) Habitat Midwater Twilight (mesopelagic) zone and upper midnight (bathypelagic) zone, including the oxygen minimum zone Diet Zooplankton Including crustaceans and siphonophores Range Worldwide Tropical and subtropical waters, as well as cold temperate waters in the North Pacific Ocean About This …

Armored sea cucumber

The armored sea cucumber holds tight to the seafloor, with feathery tentacles to catch food and hard scales to protect from predators.

Crystal amphipod

Invisible armor and giant eyes help the crystal amphipod survive life in the expansive waters of the ocean’s twilight zone.

Fingered goblet sponge

Massive fingered goblet sponges grow together in dense gardens that offer safety and shelter for an assortment of other animals.

Mystery mollusc

animal Type Maximum Size 14.5 cm (5.5 inches) Depth 1,000–4,000 m (3,300–13,100 feet) Habitat Midwater Midnight (bathypelagic) zone Diet Crustaceans Including mysid shrimp Range Northeastern Pacific Ocean Oregon to Southern California, but possibly more widespread About Our first sighting of this unique sea slug stumped our scientists. In early 2000, we encountered a curious critter …

Dinner plate jelly

The dinner plate jelly is one of the ocean’s top predators, with an appetite for other gelatinous animals.

Giant cusk-eel

The giant cusk-eel has a keen sense of smell to find food on the sprawling deep seafloor.

Gossamer worm

Instead of crawling along the seafloor, the gossamer worm swims gracefully through the midwater.

Octopus squid

With eight arms instead of 10, the octopus squid breaks the rules, but eight arms are not the only thing that stands out about this species.

Warty deep-sea octopus

A mother warty deep-sea octopus protects her eggs for record time to better the odds that her hatchlings survive.