[Bungleau]

There are crabs out there, though they seem to be few and far between sometimes.

There are a couple near the lost city, generally, and en route to getting there, you'll find others, I'm sure. I actually prefer to swim through the water looking for them. Pop up every so often to take a breath of air, then dive again.

Combat tip: when you see them, and they see you, head for shore. As soon as you touch sand on the side of the shore, you'll stay in place and they'll come to you. I've always found it difficult to swim up, swing a sword, and stay still, all at the same time.