Whorlpod

The whorlpod split from its ancestor and is a result of neoteny. It now spends its entire life as the pod stage in its life cycle. They have four tentacles that filter-feeds as well as 10 breathing holes in the top and many air release holes scattered along the pod body. It will release spores into the water from its air release holes when it is old enough. They are highly successful, and in some places, the river floor is completely covered in them.