Ram's Horn Snail Planorbis species Phylum: Mollusca Class: Gastropoda Order: Pulmonata		Ramshorn snail Ram's Horn snails are very common. They are a type of mollusc. The shell is a simple flat coil with no spire or point.
	Habitat		Ramshorn snails live in the water at the edges of ponds (the pond margins).
	Moving around		They glide about by muscular action of a flat, slime-covered "foot". Waves of muscular contractions push and pull the snail's body along the surface of plants and stones.
	Feeding		They eat: algae that coat water plants. They are herbivores. Snails use a file-like structure called a radula, which consists of rows of teeth and is moved backwards and forwards to rasp the algae off the surface of plants or rocks. They are eaten by: fish and ducks.
	Reproduction		Snails are hermaphrodite (they have both male and female organs). All of them can therefore lay eggs. Each egg is covered in jelly for protection, and is attached to a plant. When the eggs hatch, tiny baby snails emerge.
	Breathing		Ramshorn snails rise to the surface of the water every so often, to take air into a cavity under the shell. The cavity holds air, and does the same job as a lung. This is different to many other water animals which breathe through gills.
	Size		25 mm
	Fun Fact Ramshorn Snail. Can you see the heart beating, near the bottom left?		All the important organs such as the heart, digestive system, egg- and sperm- producing tissues, are protected inside the shell.