Manta Birostris is the largest type of ray in the world, they feed on plankton and can grow to a disc size of up to 9 meters. I created this model for a ROV simulation application (Remotely Operated Vehicule, used for deep sea exploration) made by Interactive System Studio. This application allows you to control a ROV and explore the sea. The manta ray is animated, follows a path on the scene and avoids the ROV if it comes too close. Go and check out : http://iss.io/rov/