Shows coral—reefs, ocean ecology, snorkeling, or conservation.

Shows a dolphin—ocean, playful jumps, intelligence, friendliness, or marine life.

Shows a seal—playful marine mammal, ocean, beaches, or aquariums.

Shows a fish—seafood, fishing, rivers/sea, or generic fish topics.

Shows a jellyfish—ocean, stings, drifting, translucent looks, or calming visuals.