These scorpion-like crabs, called mana, live in the mangroves around Viti Levu, Fiji's main island. You can buy a woven bag of them at the Suva market for US$12. They taste delicious boiled, shelled, and soaked in miti, the ubiquitous cold sauce made from fresh coconut milk, onion, tomato and chili, with a side of ota, the local ferns.