Be very careful if you see a swarm of these on the surface. I was on my raft with my 193 raptor and 140 baryonyx when we got ambushed by a sarco on our way back between bases. Knocked us out of the raft and into the water where they fought it until a swarm of jellies came in and killed everyone. Fuck. These. Things.
Use the ichthy they said... it's immune to shocks they said... that's fine I'll quickly swim done with no scuba gear and lure one to the surface...zap... surface is so near yet so far... manta finish the job