Science

Baby manta rays hunker down close to coasts before facing the open ocean's dangers

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 22/10/2026, 04:10:24 UTC.

Briefings

Giant manta ray pups face significant predation risks in the open ocean due to their small size relative to adult predators like sharks and orcas, despite their large adult body size. This vulnerability occurs because adult manta rays are too large to be preyed upon, leaving pups defenseless against marine life in the open water.

Key points

• Giant manta ray pups are vulnerable to predation by sharks and orcas in the open ocean because their small size offers no defense against large predators.
• Adult manta rays can reach up to nine meters in length and weigh up to 2,000 kg, making them too large to be eaten by any known marine predator.

Context

This finding highlights a critical life stage vulnerability for manta rays, where the transition from protected juvenile phase to open ocean exposure exposes them to high predation risk from apex marine predators.

Limitations

Evidence is limited to general size ranges and predator types; specific predation rates, geographic distribution of threats, or behavioral responses to predation are not provided.

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