Just so you know it can be ridden underwater. While riding it your oxygen wont deplete and its a very fast swimmer. Its attacks can insta-kill trilobites and collect a huge amount of chitin at the same time. They can also be carried by pteranodon and above so you can easily transport them to different places, and easily pick them up and tame them elsewhere.
Amazing for starting out if you wanna go in the ocean and you don't have scuba gear unlocked, they are extremely fast and can outrun pretty much anything in the water like the dolphin, I still use mine even now