Inspired by your post, I have put on Toxic Shark. Meanwhile, for fans of monster movies, there are reels of stop-motion monster movies... one started with The Lost World and went thru till the ninties... then I spotted the Japanese reel... five hours of Zilla and many others, five solid hours of hilites. Can't understand a word of it, but fun.
Toxic Shark - live review: A couple riding dune buggies crash at the shore, the undertow gets them? No idea, now it's character development, some louts, and - boom! The shark appears, in shallow water, spraying green acid from a nozzle on it's head? Victim 1 eaten, then another shark leaps high in the air and lands on victim 2.
Okay back to the girls...one studies environmental science. The guys are vapid..'Is that a shirt or a sausage casing?" We're in Puetro Rico, and Reese is the bigmoth bigshot boss, of a fitness retreat. Our MC girl has a magnetic bracelet on, it creates an electromagnetic pulse, confusing sharks.. *
Girl on horse on beach, horse acting up, shark leaps out, grabs her, 3 down. 4 is a fitness instructor and now everyone knows about the shark(s),, the cellphones are out, the boats are broken, one blows up, if the shark scrapes someone, they go nuts, a chance for bad crazy acting which is not passed up.
Now, acts of stupidity, then MC learns the seawater is infected with... arsenic. A while later, everyone is crazed, like zombies, except 4 MCs...
the shark sprays green goop, which gets arsenic on the boat motor, but heroic acts involving a flare gun allow this one to end, with sequel setup. More sharks and zomboids... Won't be reviewing that one. )