Extremely Fast on Land and Water, good for hunting(not GREAT), and has a really good speed right off the bat. You really don't need to upgrade its speed unless you have nothing else to upgrade. I haven't tamed one yet, but my friend has two and he uses nothing else to hunt underwater(Him and I hunted a Mosasaurus and actually killed it!). It is maybe the most valuable tame for water, and maybe on land.
This dinosaur is a very intricate but interesting dinosaur to get. I did find it near the shore line as it had seen me and wanted to eat me. However I had 5 tranq arrows which you can get at lvl 21. I shot all 5 and he fell to the ground. Very good dinosaur to tame especially in the water. It beats anything in the water even with its stun strike. I recommend using this dino to fight. I have one named Juju. One like equals One love for Juju