Piñas Bay, Panama: A 600-pound marlin spears an 18-year-old; Samill and the surrounding area; Similan Islands, Thailand: A diver loses a thumb feeding a moray eel; Dyer Island, South Africa: Divers have to exit their shark cage when a great white invades it; Antarctica: Tourists aboard a cruise ship watch a family of orcas hunt a seal trapped on an ice floe; Tzoonie Narrows, British Columbia: An octopus latches onto a diver's mask; Lake Catherine, Louisiana: A mako shark thought to be dead bites a man's hand.