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.
Anemonefish are the best known example of fish that are able to live among the venomous sea anemone tentacles, but there are several others, including juvenile threespot dascyllus, certain cardinalfish (such as Banggai cardinalfish), Bucchich's (or anemone) goby and juvenile painted greenling.