Southern stingrays congregate on the sandbar in Grand Cayman, Cayman Islands.

Southern stingrays congregate on the sandbar in Grand Cayman, Cayman Islands.

Migratory Starlings on telephone wires at Thames Estuary. Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Common Sandpiper (Actitis hypoleucos) on pier feeding on knats flapping wings, reflected in water. The Knats congregate at the end of piers and rock outcrops on the Loch which make them a perfect snack for Common Sandpipers.

Photo essay in Lome, Togo. AIDS prevention workshop in Loyola Hope Center.

Photo essay in Lome, Togo. AIDS prevention workshop in Loyola Hope Center.

Sign at the Culture and Convention Center KKL, Lucerne, Switzerland

UNALASKA, AK - JUNE 22: A group of western Stellar sea lions (Eumetopias jubatus) congregate on a rocky outcrop along the Aleutian chain on Unalaska Island, Alaska on June 22, 2008. The western Stellar sea lion. the largest of all sea lions, is considered endangered with the reason for its decline uknown. (Photo By Dan Rafla/Aurora), United States of America

Atlantic Spotted Dolphin (Stenella) three silhouetted sunburst, underside view C1993

Hawaii, Lanai, Kalokahi O Ka Malamalama Ho'omana Na'auao O Hawaii Church, golden view

Hawaii, Dolphin pod swimming together underwater.

Hawaii, Lanai, Kalokahi O Ka Malamalama Ho'omana Na'auao O Hawaii Church, golden view