Ko Tao was named by its first settlers after the island's turtle-like shape.[citation needed] Coincidentally, the island is an important breeding ground for hawksbill and green turtles. Development of tourism has negatively impacted the health of these grounds but a breeding programme organised in 2004 by the Royal Thai Navy and KT-DOC, a coalition of local scuba diving centres, has reintroduced hundreds of juvenile turtles to the island's ecosystem.