Scientists Discover a Giant Manta Ray Population, 10 Times Bigger Than Any Other
sciencealert.com
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Test 1 With so many species under threat due to human activity and climate change , it's encouraging to hear about one population that's doing very well for itself: a group of more than 22,000 oceanic manta rays (Mobula birostris ) off the coast of Ecuador. Test 1
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Test 2 In 2019, oceanic manta rays were reclassified as endangered on the IUCN Red List of Threatened Species, with commercial fishing the largest threat to the species – whether that's through direct targeting or unintentional bycatch . Test 2
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Test 3 That identifies this Isla de la Plata region as something of a hotspot for these fish. The team thinks that a plentiful supply of food could be one of the reasons the population size has grown, with cold, nutrient-rich water rising up from the depths and delivered on ocean currents providing a steady stream of zooplankton snacks. Test 3
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Test 4 "Many of the photos used in our study were contributed by recreational divers who became citizen scientists when they snapped photos of manta rays," says marine researcher Kanina Harty , from The Mantra Trust in the UK. Test 4
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Test 5 Since the late 1990s, scientists have been keeping tabs on this particular group of manta rays in coastal Ecuador. For this latest estimate, researchers used more than a decade's worth of photos and observations taken out in the field between 2005 and 2018 to estimate a current population of above 22,000. Test 5
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Test 6 Since the late 1990s, scientists have been keeping tabs on this particular group of manta rays in coastal Ecuador. Test 6
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