MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY
Giant manta (Manta birostris) swimming in front of the Sun. The manta is the largest of the rays, and it can reach up to six metres from wingtip to wingtip. It inhabits tropical seas throughout the world, preferring coastal waters to the open sea. It feeds mainly on plankton and small fish, which it filters from the water. The fins on either side of its head (lower right) help to guide water into its mouth. Photographed in the Indian Ocean, off the Maldives.
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