Changes in subtidal community Structure resulting from the BC Sea Otter transplants

Paul Breen, Trudy Carson,  Bristol Foster and Anne Stewart  did this report for DFO . In 1979 they visited the area known to be occupied by 55 animals in 1978 and made subtidal observations of the abundance and distribution of red sea urchins and found the red urchins to be scarce and restricted to crevices, or beneath boulders……
sea otters eating in kelp bed photo by Sherry Kirkvold

See the complete PDF: changes_subtidal_community_structure_resulting_sea_otter_transplants