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.
This allows the Aiptasia anemone to reproduce quite rapidly. There are a number of species of Aiptasia, but the two listed here L. pallida mainly from the Atlantic Caribbean region and L. pulchella from the tropical Pacific seem to be the most commonly seen in the hobby.