Manta Ray leaping 9 feet in the air off the coast of Costa Rica, Central America // photo by Roland Seitre Solent. 2010 -- click photo for article; "Natural Selection" is a great book about rays developing the ability to fly.
Manta Rays - Angels of the Ocean. Manta rays are listed as a Vulnerable species. They are endangered by getting entangled in fish nets, fishing for use in Chinese medicine, ocean pollution, and low reproductive rates.