Alex Mustard / Southern stingray (Dasyatis americana) two swimming over sand bar, under stormy sky. Grand Cayman, Cayman Islands. British West Indies.

Franco Banfi / School of Munk's devil ray, pygmy devil ray, (Mobula munkiana), feeding on plankton at night, photographed on a long exposure, Espiritu Santo Island, Sea of Cortez, Baja California, Mexico, East Pacif...

Mark Carwardine / Munk's pygmy devil ray / Munk's mobula (Mobula munkiana) large school from the air with one leaping out of the water, Baja California, Mexico

Mark Carwardine / Munk's pygmy devil ray / Munk's mobula (Mobula munkiana) large school from the air, Baja California, Mexico.

Jordi Chias / Spotted eagle ray (Aetobatus narinari) school, Kagi kandhu, ;North Male Atoll, Maldives, Indian Ocean.

Jordi Chias / Round ribbontail ray (Taeniura meyeni) South Ari Atoll, Maldives. Indian Ocean.

Alex Mustard / Southern stingray (Dasyatis americana) swimming over sand in shallow water, split level photo with blue sky and clouds. The Sandbar, Grand Cayman, Cayman Islands. British West Indies. Caribbean Sea.

Jordi Chias / Giant Manta (Manta birostris) going overhead, Santa Maria Island, Azores, Atlantic Ocean

Jordi Chias / Giant Manta (Manta birostris) with Remoras (Remora brachyptera) attached to both wings, offshore Santa Maria Island, Azores, Atlantic Ocean

Jordi Chias / Mobula / Chilean devil ray (Mobula tarapacana) with remora (Remora brachyptera) and Amberjacks (Serila dumerilli) Santa Maria Island, Azores, Atlantic Ocean

Franco Banfi / Devilrays (Mobula tarapacana) two viewed from below, Ambrosio dive site, Santa Maria Island, Azores, Portugal, Atlantic Ocean.