If you're looking for an educational game, don't bother.. there are amphibians in the salt water.
If you're looking for endless ocean nostalgia, don't bother.. You can't examine the coral to see small fish, or so it seems after an hour of a half of wondering around what appears to be one map.
If you're looking for cool sharks that attack, don't bother.. already found the legendary great white, it doesn't attack..
Basically a really boring game.
Sadly I got sucked into buying it for 59 dollars... I wish I'd purchased pokemon violet instead. Sad times.