Defeating The Intruder
Bite his antenna to get his attention. Note: After you defeat him with Goliath (great white shark) he will gain the sucking ability; do not approach his front. Lure him to a nearby sea mine. He will get dizzy and release some mushroom bubbles. Eat the bubbles to drain his health. After repeating this tactic four or five times, he will shrink and your character will chase him.