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. Many sharks possess body markings. Often, the latter are correlated with bottom habitats and likely serve as camouflage. Yet, open water sharks oftentimes also possess distinctive markings. The report summarizes various functions that such markings could subserve.