Leopard Sharks are generally 20 to 23 cm. at birth (or 8 to 9 inch). The largest recorded size is approximately 180 cm. long. The average size of an adult leopard shark is between 50 and 60 inches (120cm to 150 cm). It can weigh up to 71 lb (32 kg).
Leopard sharks are found in rocky areas, rocky reefs, kelp beds, sandy areas and under piers. Leopard sharks swim at depths of 10 to 250 ft. They are usually seen swimming at 20 feet or less. They prefer cold to warm water. They are often seen at large shoals but when breeding can be solitary.
Leopard sharks range from Mazatlan, Mexico, to Oregon. Tagging has revealed that stock is mostly resident in San Francisco Bay. However, about 10 percent of the population moves into the ocean seasonally, and one male tagged in San Francisco Bay was recaptured in Santa Monica Bay 10 years later. Mixing between regional stocks is thought to be limited.
Reaction to Divers
The best way to approach a leopard shark is by using a snorkel but nonethless, it is still difficult to get in close contact with. Apparently, the shark is easier to be in human contact during the night. Due to their small size, a threat is not likely to be posed to humans.