NocturnalSea

Great Cthulhu, H. P. Lovecraft's most famous creation.

An Elder Thing from Lovecraft's At the Mountains of Madness depicted in flying/swimming mode. The star-shape surrounding it is made of marine and prehistoric creatures including anomalocaris, trilobites, comb jellies, jellyfish, ediacarans and more.

Lovecraft's Great Race of Yith from The Shadow Out of Time depicted in the style of 19th century artist-naturalist Ernst Haeckel. Featuring several other creatures taxonomically related to the Yithians

The Colossal Squid is an even larger relative of the famous giant squid.

Enypniastes, also known as the "Headless Chicken Fish" is a swimming sea cucumber that lives in the deep sea. It's internal organs are visible through its gelatinous, transparent body.

Poison Dart Frogs from the rain forests of the Amazon.

In Japanese mythology, a household item will acquire a soul once it has existed for 100 years, becoming a type of yokai called a tsukumogami. One of the more well-known tsukumogami is the karakasa-obake, which is born from a paper parasol. Behind it is a liveing paper lantern called a chochin-obake and a pair of animated sandals called bake-zori.

A hydrothermal vent dominated by giant Riftia tube worms

A hydrothermal vent from Antarctica. Instead of the tube worms of Pacific vents, Antarctic vents are dominated by yeti crabs and stalked barnacles