This species is less common around Rosario in late spring and early summer but becomes quite common by the end of summer. June 30, 2009: Many Aequorea victoria are washing up on the beach at Rosario Bay. Most of them are moribund, and have this flatworm crawling over them. The flatworm is up to 5 mm long.
This view of the underside of a swimming individual shows the many radial canals, the many tentacles along the margin of the bell, and the small manubrium in the middle.
Aequorea victoria, 4 cm diameter, captured in central Rosario Strait July 12, 2007. The broad, open manubrium with frilly lips can be seen through the bell. The tentacles are retracted. (Photo by: Dave Cowles, July 2007)