Wouldn't it make sense to have the same splashdown element that exists on the B&M Splashdown Coaster on the B&M Dive Coaster as well? They both have the fins on the back of the train that are meant to scoop up water and shoot them out the back and many real life dive coasters (including ones the in-game model are clearly based on) feature splashdown elements.
Fins on the Splashdown Coaster
Fins on the Dive Coaster
Real life Dive Coaster splashdown
Fins on the Splashdown Coaster
Fins on the Dive Coaster
Real life Dive Coaster splashdown