| The Boulder or Campbell's Bay, lays northwest of Koh Similan. Thanks to the huge granite blocks, which look like the head of Donald Duck, this dive site got its name. A small bay with fine white sand invites to go on shore, so you can have a close look at Donald Duck. It's also fun to snorkel in this real quiet bay. A lot of coral heads with snappers, batfish, lionfish, scorpion fish, stonefish and triggers. At this beach the diving is uncomplicated and easy and is mostly used by liveaboard boats for the over night stay.