Project Description

During a night dive I saw this spawning mottled star (Evasterias troschelii) sitting up high in the water with arms extended downward for support.  This spawning posture positions the central disc high up in the water, so that males and females can release their gametes into the surrounding water with the resulting larvae becoming part of the drifting plankton.  The mottled star can grow to 24 inches (60 cm) across, with a range that includes Siberia, as well as northern Alaska to central California.