Sea Urchin - Planktonic Origins Barely visible to the naked eye, sea urchin larvae grow and transform into bottom-dwelling urchins.
Instrumented buoy (Photo : David Luquet)
Phytoplankton bloom observed by the ocean color sensor MODIS onboard NASA satellite Terra in May 2010. The bloom spreads broadly in the North Atlantic from Iceland to the Bay of Biscay - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)