Snail attacks pencil
On the Pacific coast of Costa Rica a major predator in the community of animals living on sandy beaches is a snail, a species of Olive Shell (Agaronia propatula). This snail moves up and down the beach by ‘surfing’, extending its foot so that it is carried along in the wave swash. It is a voracious hunter and its main prey is a smaller species of Olive Shell. In its wave-washed environment it has to act quickly.