ocean

The <n>Lion's Mane Jellyfish Larval Stage</n>, photographed by <n>Alexander Semenov</n>.

A <n>Sea butterfly (Limacina helicina)</n>, a type of swimming snail. Photo by <n>Alexander Semenov</n>.

Stunning Photos of 'Sea Angels' and Other Technicolor Creatures Floating in the Deep

The meeting of the <n>Baltic Sea</n> and the <n>North Sea</n> near Skagen, Denmark.

<n>Imprint of a Giant</n>, a photograph of a <n>Humpback whale</n> off the coast of Sydney, Australia.

A <n>Sea angel</n> (*Clione limacina*) in the White Sea, photographed by <n>Alexander Semenov</n> for <n>Greenpeace</n>.

<n>The Swarm</n> by photographer <n>Kurt Arrigo</n>, an entry in the 2014 <n>National Geographic Traveler Photo Contest</n>.

6 Otherworldly Deep-Sea Creatures Spotted By CA Scientists

A <n>Stalked jellyfish</n> (<n>Lucernaria quadricornis</n>) in the White Sea. Photo by <n>Alexander Semenov</n>.

A <n>Flabellina polaris</n> sea slug in the White Sea, Russia. Photo by <n>Alexander Semenov</n>, 2011.