overhead view of a giant african land snail with two eyes at outside of its shell

lissachatina fulica land snail mollusk shell achatininae giant african pest invasive species southeast asia conical shape brown west banana rasp archachatina marginata overhead view two eye tentacles outside sitting top dead trunk surface wood nature mollusc parasite animal small wild spiral wildlife slow closeup macro natural green antennae background wet moss outdoors terrestrial house garden tentacle ecological biology meadow eyes