I had a lvl 268 male mosasaurus named Riptide, and I used to take him out on swims every day. One day, I went out on our daily swim, and out of nowhere, 5 cyndria (I think that's how you spell that) spawn right on top of Riptide! He started to take damage, and I knew I had to act fast. I jumped of him and did what I had to. I swam for days, having to fight of megalodons on the way. I finally got to shore, and mounted my megladon (Bubbles) and was getting element from a box to shoot the jellyfish, when I see Riptide swimming twords the dock! He survived, and every day since then, I've taken him on his daily swim.