Must tame!! These are amazing! Just in a one day trip into the ocean I gathered 820 bio toxins, 443 silica pearls, 1000+ raw fish meat, and 41 oil. I encountered alpha Megalodon too and took it down like nothing with the basilosaurus! It's now level 35 and its health is 5557.2 and melee damage is 329.9%. They're absolute tanks!