Red Echofin

The red echofin split from its ancestor the echofin. It followed the segmented pyamus to shallower waters. Now exposed to the sunlight it gained red and black pigment. This not only protect its from solar radiation but blend in with the red and black colored segmented pyamus. It now has a more streamline shape. However its echolocation "cone" behind its 4 jawed mouth still creates a large amount of drag. The benefit of "seeing" through sound out weighs the disadvantage of drag.

Each segment still has their own set of fins. However they now work in unison by all pushing at the same time in a thrusting type of swimming. On their tail they now have a paddle which has primitive gills. These gills are full of its copper blood which cause it to look blue. Each summer all 3 sexes gather in various spawning grounds. They they release their spores, sperm and hormone into the water. Without the 3rd gender releasing its hormone the male's sperm cannot enter the female's spore.