User blog comment:Jamintheinfinite/Subnautica Creature Evolution/@comment-28450065-20180331231031/@comment-29172324-20180401140314

I do agree with the lava lizard not being closely related to the Sea Dragon. Infact, that's why the lava lizard's red line isnt point directly at the Sea Dragon. The Stalker and Lava Lizard relation also seems possible. It just depends on how old the lava lizard is. Since the stalker is one of the oldest creatures on the planet and didn't evole since it hit the "sweet spot." I find it unlikely that the some Stalkers became Lava Lizards. If the Lava Lizard is an old enough creature then it would be possible that lava lizards became Stalkers. It could also be possible that the Stalker and Lava Lizard aren't closely related and they just have happened to have big teeth and they don't have bioluminescent since they didn't need it since they both live in pretty bright biomes.