X-Band radar systems are able to resolve multiple wave systems, e.g. swell and wind sea systems. Usually, swell is characterized by its phase speed: Swell waves propagate faster than the wind, where as wind driven waves can not travel faster than the wind that generated these waves (see also waves).
There are 28 known species of anemonefish, most of which live in the shallow waters of the Indian Ocean, the Red Sea, and the western Pacific. They are not found in the Caribbean, Mediterranean, or Atlantic Ocean. Surprisingly, all clownfish are born male.
A snail crawls across a group of jewel sea anemones off the Irish coast. Anemones can be tiny, a mere half an inch (1.25 centimeters) across, or as large as 6 feet (1.8 meters) in diameter. Life spans are difficult to determine, but some species are known to live more than half a century.