Keeper at ZSL London Zoo
On land, the largest snail is the giant African tiger snail (Achatina achatina), weighing 900 grams with a 30 centimetre-long shell. The biggest gastropods (slugs and snails), however, live in the oceans. As far as we know, the world’s largest snail is the Australian trumpet
(Syrinx aruanus). Its monster shell measures up to 91 centimetres and it can weigh 18 kilograms.