This time we have our alien bodyplans evolve into clades, each occupying different niches in the ecosystem of our ancient sea. 0:00 - Clades 1:19 - Niches 2:10 - Plankton 3:29 - Tachypods 5:33 - Gastrozoans 6:26 - Acanthopods 8:27 - Benthos 9:06 - Sarcopods 11:48 - Neoteny 13:37 - Tentaclostomes