A rarely-seen sea snail that was found washed up on a riverbank in Andhra Pradesh has been auctioned for ₹18,000. The orange-coloured snail Syrinx Aruanus, popularly known as Australian Trumpet or False Trumpet, can grow to be at least 60 centimetres long and can weigh up to 18 kg. The species is one of the world's largest living snails.