1,000 m and deeper

Midnight zone

Below 1,000 m, no sunlight reaches at all: the only glow comes from the animals themselves. This is the sperm whale’s hunting ground, where it finds its prey with its clicks.

30 species

Helmet jellyfishPeriphylla periphylla Atolla jellyfishAtolla wyvillei FangtoothAnoplogaster cornuta Stoplight loosejawMalacosteus niger Pelican eelEurypharynx pelecanoides Humpback anglerfishMelanocetus johnsonii Greenland sharkSomniosus microcephalus ChimaeraHydrolagus sp. Dumbo octopusGrimpoteuthis sp. Colossal squidMesonychoteuthis hamiltoni Bigfin squidMagnapinna sp. Glowing sucker octopusStauroteuthis syrtensis Blind octopusCirrothauma murrayi Giant phantom jellyStygiomedusa gigantea Deepstaria jellyfishDeepstaria enigmatica Firework jellyfishHalitrephes maasi Green bomber wormSwima bombiviridis SquidwormTeuthidodrilus samae Black dragonfishIdiacanthus atlanticus Black swallowerChiasmodon niger Slender snipe eelNemichthys scolopaceus Whipnose anglerfishGigantactis sp. Krøyer’s deep-sea anglerfishCeratias holboelli TelescopefishGigantura chuni Patagonian toothfishDissostichus eleginoides Umbrella octopusCirroteuthis muelleri Pacific sleeper sharkSomniosus pacificus Arctic Botrynema jellyfishBotrynema ellinorae (or B. brucei ellinorae) Antarctic deep-sea smeltBathylagus antarcticus Pigbutt wormChaetopterus pugaporcinus