Coelopods represent the clade of Sarcopods that have remained fully marine into the modern day. As such, they are closer to the ancestral species than their sister branch Neopoda, having retained the basic body structure, habitat, and hydraulic locomotion of the early Sarcopods.
Every Coelopod's limbs are lined with vibration-sensitive mechanorecptors, allowing them to detect movement and changes in pressure within the water.
- Eucoelopoda: Benthic detritivores, largely similar to the ancestral Sarcopods
- Trichopoda: Benthic ambush predators