Toxic Dump, Cetus, and Flesh-Eater

Hint: What do I do about the barrels of toxic waste?

Hint: The reef shark is blocking the entrance to the cave!

Hint: I found a sunken harpooning boat. What do I do?

Hint: Delphineus and I are trapped in a net! Can we escape?

Hint: I escaped, but Delphineus was captured by Flesh-Eater! How do I help him?

Hint: I found Cetus, but I don't know how to help him.

Hint: How do I get rid of the harpoon?

Hint: The harpoon is out, but it hasn't helped his wound.

Hint: Cetus and Flesh-Eater are fighting. How do I free Delphineus?

Hint: Delphineus is free..how do I help Cetus?