The Coconut Crab, Birgus latro, aka the Robber Crab, and Palm Thief. This Land Crab can grow to over 3 ft wide & weigh in at 9lb —It is the largest land-living arthropod in the world! Endemic to Indian Ocean Islands such as the Seychelles & Christmas Island, & the Pacific such as Bora Bora, & Japan's Nansei/Ryukyu Islands. Distribution mirrors that of the Coconut Palm, a primary food source. Pictured Coconut Crabs in Bora Bora.