Trivalve

The Trivalve is a small fauna species that will appear in Subnautica: Below Zero.

Appearance
On the side view, the Trivalve's body resembles a magatama, and it is mostly covered in a type of colorful exoskeleton. The creature has six visible legs, with 4 large ones supporting its weight, and two small ones right next to two pedipalp-like extremities.

Design
The body of the Trivalve looks very similar to the shell of nautiluses, the most basal of living cephalopods. The name Trivalve is inspired by the class Bivalvia, possibly suggesting some comparable anatomical features. The creature being capable of swimming upside down seems to be inspired by the horseshoe crabs.