The heaviest oceanic manta rays can weigh up to about 3,000 kg.
Sources
- Oceanic Manta Ray | MarineBio (marinebio.org)
- https://fishbase.se/summary/2061 (fishbase.se)
- https://www.dimensions.com/element/giant-oceanic-manta-ray-mobula-birostris (dimensions.com)
- https://animalia.bio/giant-oceanic-manta-ray (animalia.bio)
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