When breeding make sure they are in water and for imprint, the ones I raised was always a walk. It only shows it wants care. It doesn’t show what it wants, so I whistled follow and it got a 25% imprint as soon as I did. Each time I just took it for a walk.
Can ride but only underwater. In order to ride, hold whatever your ride button is and click the option that says ride. Level up in oxygen, health, and movement speed if using this for underwater dives. Really fast underwater, and can outspeed megalodons.