Scientists believe that many of the manta rays that they originally considered giant manta rays are actually a similar, but genetically and physically distinct third species, tentatively described as the Caribbean manta ray.Įarlier this year, Defenders of Wildlife submitted a petition to the National Marine Fisheries Service (NMFS) asking the agency to protect the giant manta ray, reef manta ray, and Caribbean manta ray (all known manta ray species) by listing them as endangered, or at least as threatened, under the Endangered Species Act (ESA). While the Caribbean and reef manta rays are slightly smaller, they are still massive, and can reach more than 16 feet wide and 3,000 pounds. Three different species – all needing protectionĪs its name suggests, the giant manta ray is the biggest ray out there. Scientists’ best guess puts a manta ray’s lifespan at 40-50 years, but, as scientific tracking of individuals increases, we could find that the massive fish live as long as 100 years. Though enormous, these planktivores are truly gentle giants. Disproportionately large as compared to the rest of its body, a manta ray’s brain more closely resembles that of an equally large mammal. Manta rays have the biggest brain of any fish, so underwater genius is more like it. Defenders calls for Endangered Species Act protection for all three species of manta raysĪt up to 23 feet wide and 5,300 pounds, calling a manta ray “giant” is an understatement.
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