 This physical abnormality has been speculated to result from pregnant females being exposed to water of unusually high salinity and/or temperature, possibly from human activity.In 1986, a long adult male with both a missing dorsal fin and partial albinism (in the form of white body color with gray-brown eyes) was captured off Wakayama Prefecture, Japan.This anomalous individual is the largest albino shark known to date, having survived for a long time in the wild despite its lack of camouflage.