Ichthyosaurs

A school of Ichthyosaurs swims over a bed of seaweed in the Jurassic seas. Though they may look like dolphins, they are, in fact, reptiles, and they swam the oceans in the time of the dinosaurs. The particular species depicted here is stenopterygius, very similar in appearance to the ichthyosaurus, for which the order is named. Stenopterygius, though, was about twice as big overall, but with a proportionally smaller head and flippers.

Thanks for looking,
Daniel