A shopper was repulsed after he bought a bag of live crabs from the supermarket and found them riddled with maggots. Rowyn Cai, 58, paid 40 Singaporean dollars (22.50GBP) for the bag of seafood which he planned to steam and eat with his family last Friday (25/01) night. But after returning home and preparing to wash the crustaceans, he noticed the larva wriggling around inside - scuppering his plans for a seafood supper.