Crustacean · amphipod

Phronima

Phronima sedentaria

PacificAtlanticIndianSouthernArctic Found in 3 oceans

Temperate and tropical waters of all oceans

Depth

Surface to 1,000 m

Size

Female 2 to 4 cm, male about 1 cm

Diet

Gelatinous animals

Zone

Twilight zone · 200 – 1,000 m

Key facts

• The female empties a salp or a pyrosome and settles into the transparent barrel that remains.
• She raises her young inside it, pushing the barrel through the water.
• She has two pairs of compound eyes, one of them very large and facing upward.

Verified sources

1. Wikipedia, Phronima sedentaria
2. Naturalis, Phronima sedentaria
3. Science Friday, Monster in a barrel
4. SeaLifeBase, Phronima sedentaria

In the game: To observe

In the same zone

Giant red mysidNeognathophausia ingens TomopterisTomopteris sp. BristlemouthCyclothone sp. Black scabbardfishAphanopus carbo Megamouth sharkMegachasma pelagios Frilled sharkChlamydoselachus anguineus