When magnet mines start coming towards you, back up S.T.O.R.M. and use
lasers to blast the mine. Near the krill puzzle, send out the diver and
follow the shark which eats the krill in order to get the probe. But be
careful that the shark doesn't also get you!
Level 2A - The Sea Lion Puzzle
The sea lion will chase away the fish which block STORM. Kill the sharks
before they get the Sea Lions.
Level 2C - the Giant Squid
This is a Diver-Only level, so watch that you don't run out of oxygen.
The main puzzle is at the end, where you must decide whether or not to
save the whale. (You may be rewarded later in the level, depending on
your decision.)
Level 3B - The Sea Anemones
A probe is trapped by one of the anemone. Lure the fish near the anemone.
It will release the probe and go for the fish.