Oceanic manta rays' pectoral fins commonly span up to about 7 meters, with the largest recorded individuals reaching roughly 8.8 meters.
Notes on verification
Core figures (common ~7m, max ~8.8m) are corroborated across multiple sources, but exact maximum varies (6.7m-9.1m) depending on source and species split between M. birostris and M. yarae. General order of magnitude is well supported.
Sources
- Oceanic Manta Ray | MarineBio (marinebio.org)
- https://mantarayadvocates.com/the-size-of-manta-rays/ (mantarayadvocates.com)
- https://www.mantatrust.org/mobula-birostris (mantatrust.org)
- https://australian.museum/learn/animals/fishes/giant-manta-ray-mobula-birostris/ (australian.museum)
- https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2023.1128819/full (frontiersin.org)
- https://www.fishbase.se/summary/Mobula-birostris.html (fishbase.se)