Taming one was a lot easier then I thought. Just back up enough to the point were it can see you barely enough to attack, then throw a bola while it's coming at you and then use your tranq arrowsor darts to knock it out.
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