Take another look at the sentence:
Leaping out of the water, the pier seemed a safe place to Donny, who had
spied a shark.
Leaping out of the water onto the safe pier, a participle phrase, comes right before pier, an illogical target. A scared young man, not a pier, has arms and legs that help with leaping! Before you continue, review the rules for misplaced and dangling modifiers.
Go back to the sentence to try again.