Sootle / ノープベント

It lives in the extreme temperatures and pressures of the deep ocean. It scours the ocean floor for food, and when it finds it, it sucks it into its body along with surrounding sand and rocks. It breaks down this material into minerals which it constructs its shell from, and ejects the waste as smoke.

Larvent / ノープヂムニー

It eats microscopic life and scraps, and devotes all of its attention to growing larger. It uses its tentacles to stir up the ocean floor and then swims around, sucking everything out of the water. When it senses danger, it buries itself in the sand up to its helmet and ejects bursts of smoke.

Volcanicle / フジツァン

On reaching adulthood, it fixes its shell to a place on the ocean floor and eats through the ground, converting it into more shell. This process creates a massive amount of heat and smoke, which attract other deep sea life to its location. Creatures that get too close to the smoke vent are sucked in and eaten.