Specimens collected during the elimination study provided information about species composition, sex ratio, and maturity states of these skates. Abundance and distribution patterns were investigated and comparisons for different times of the day were made. Special attention was paid to interactions between individuals and the behaviors correlated with such interactions. Burying behaviors were examined at different times of the day. The resting orientation of these skates was recorded and possible relationships with physical factors, such as current direction, were investigated.
Most vertebrates confine their movements to specific areas.
Twenty-three juvenile lemon sharks were fitted with ultrasonic transmitters and manually tracked in the North Sound, Bimini, Bahamas. These young sharks maintain a very restricted activity space, usually close to the mangrove-fringed shoreline with averages 0.69 km 2 in area. Hence these juvenile lemon sharks are both home ranging and social. Preliminary evidence suggests that home range area increases and changes location during ontogeny. Such inclusions suggest that requisite information is being transferred between individuals to achieve social functions.