Aquarium Releases Sharks Off Sydney Beach for Study
A Sydney aquarium released seven sharks bred in captivity and tagged with acoustic tracking devices into the waters off a city beach on Tuesday to study if it is feasible to breed sharks to restock dwindling wild numbers. The two-year-old wobbegong, or carpet sharks, measuring up to 80 cms in length, are bottom-dwelling sharks and regarded as harmless but can grow to three metres (10 feet) in length.