User blog comment:Jamintheinfinite/Subnautica Creature Evolution/@comment-29559089-20180331062233/@comment-29172324-20180331120652

Boomerang and lava boomerang are closely related. As for the eyes,they just change over time. The chart is based off in game stuff. Anything with a black line is confirmed to be closely related as stated with the PDA. The red lines are just theorys made by fans.