Escivs are around 1cm long, and 0.4cm wide.
They have a thick carbonate armour, six cilia and a tail like other Rhombites.
They have a primitive eye above their cloaca, and small maxillipeds.
Esciv Rhombites eat Fanisid spores and smaller Rhombites.
Rhombites reproduce asexually, laying a small sac containing five to ten eggs. This floats in the plankton.
These hatch to produce smaller Escivs, which grow up rapidly. Escivs usually live a month if not eaten, and reproduce once every ten days.