Which is a primary predator of fish?

• A. Common dolphin, white-sided dolphin
• B. Nursery for fish, invertebrates
• C. Seals, larger fish, birds
• D. Area between high and low tide

Answer: (C)

Understanding who preys on fish in marine ecosystems is about recognizing the main hunters that routinely target fish across different habitats. Seals, larger fish, and birds together represent the primary predators fish face in many coastal and open-water environments: seals actively hunt schooling fish along shorelines, larger predatory fish such as sharks and other big species stalk and capture fish in deeper waters, and seabirds dive or skim the surface to catch fish near the waterline. This combination captures the broad, real-world predation pressure on fish from multiple animal groups, which is why it’s the best answer.

The other statements describe a habitat or a single predator type rather than the broad set of animals that commonly prey on fish. A nursery for fish and invertebrates is a habitat used by young fish, not a hunter. The area between high and low tide is a tidal zone, not a predator. While dolphins do eat fish, listing them alone doesn’t reflect the range of major predators that fish encounter.