Fall in shark numbers 'worrying'

The blacktip reef shark is usually found in water only a few metres deep, and can often be seen swimming close to shore with its dorsal fin exposed. (Photo: Thon Thamrongnawasawat Facebook account)

A marine ecologist has warned about the sharp drop in the shark population in the waters of Thailand over the past decade.

About 75 of the 87 shark species in Thailand are endangered, among them the whale shark, leopard shark, hammerhead and bull shark, according to Asst Prof Thon Thamrongnawasawat, deputy dean of the Faculty of Fisheries at Kasetsart University.