Tom Anders/Longleat
Measuring 6.5 centimetres, this giant magnolia snail (Bertia cambojiensis) at Longleat Safari Park in Wiltshire, UK, certainly lives up to its name. Also known as the Vietnamese giant snail, this species was thought to be extinct until living specimens were discovered in southern Vietnam in 2012. There are estimated to be around 300 left in the world.