This is going to feel a little bit targeted, but it’s important: understanding is a story we tell ourselves that feels satisfying. Explanations being plausible contributes nothing to their truth value. The poster above goes over it briefly, but the correct way to test an aquatic ape hypothesis is to look at the adaptations other animals who are aquatic/nonaquatic have and compare. Looking at our adaptations in a vacuum and trying to find an explanation, even if you aren’t picking and choosing is bound to find just-so explanations that are plausible but nearly certainly wrong.