This heavily urbanized area may create environmental conditions such as warmer water and softer sediments, which are optimal for this species. As a result of the large numbers of stingrays in the waters off Seal Beach, hundreds of beach-goers are injured each year. Despite the large number of negative interactions between humans and stingrays, surprisingly little is known about the ecology of these rays. Of particular interest with regard to human interactions are the movements of these stingrays. In previous studies large numbers of rays have been tagged at Seal Beach, but few are recaptured there.