Pelagia noctiluca
Pelagia noctiluca (Forsskal, 1775) is a jellyfish in the family Pelagiidae.
In Latin Pelagia means “of the sea”, nocti stands for night and luca means light, thus Pelagia noctiluca can be described as a marine organism with the ability to glow in the dark.
This species of jellyfish commonly known as the mauve stinger in Europe, amongst many other common names, is widely distributed in all warm and temperate waters of the world's oceans, including the Mediterranean Sea, Red Sea and Atlantic Ocean. It is also found in the Pacific Ocean, with sightings in warm waters off Hawaii, southern California and Mexico, as well as other Pacific locations. This is typically an offshore species, although sometimes it is washed near the coastlines and may be stranded in great numbers on beaches. The color varies worldwide, and in addition to pink or mauve, it is sometimes shades of golden yellow to tan.
Source:http://en.wikipedia.org/wiki/Pelagia_noctiluca - 08.11.2011
Pelagia noctiluca
Besides the harmonic and yet exceptional motions its transparency makes the Pelagia noctiluca fascinating.