This big guy is so useful! Easily obtainable in The Island since you can immediately swim to herbivore island and feed it fish as soon as you get an icthy and a saddle. Looots of weight capacity, make oil just from eating, take no damage from cnidarias, (thats right, that blue jelly that killed your tame a few days ago? Easily reduced to biotoxin thanks the the help of the chonky Basilosaurus.) AND you cant be dismounted from it by wild creatures, too! I’ve made a team of them and icthys, basilos focusing on hp, and icthys focusing on melee attack. Together, they basically conquer the ark ocean.

Only downside is that it’s kinda slow, making it awkward if youre sprinting through the ocean with a fast creature like an icthy, and it easily gets stuck in rivers.