Predators of bluefin tuna include sharks, large predatory fishes, humans, marine mammals, including killer whales and pilot whales. Their anti-predator behaviors are schooling and the ability to make a fast escape. Their countershaded coloration makes them camouflaged in aquatic environments, their blue coloration dorsally makes them less visible from above and their light ventral coloration makes them less visible when seen from below.
- killer whales (Orcinus orca)
- pilot whales (Globicephala)
- large sharks (Chondrichthyes)
- large predatory fishes (Actinopterygii)
- humans (Homo sapiens)
Anti-predator Adaptations: cryptic
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