[Lee Stewart]

Even though this mollusk can be caught in many places around the world, it's an extremely complicated process and these sea snails also run a high risk of extinction so some countries allow fishermen to catch only 10 a day. Renowned for its delicious meat, abalone is one of the most expensive shellfish you could eat, costing as much as $500 per kilogram (2.2lbs). Due to the heavy shell protecting the edible part, that translates to only about 250g (just under 9oz) of the actual meat.