Ok, so I was once taking a swim while my tames were near the shore and when I look to my right, these guys showed up and I swam for my life but the shocked me so when I took my spear out and hit one of them my tamed came over and started to attack these jellyfish...

I lost my Scorpion, Parasaur, and Sacro. :(

R.I.P. Scorpio, Lilly, and Snapper...