Eustreptospondylus was a massive scavenger from the mid Jurassic. It was one of the few aquatic dinosaurs because it had to swim from island to island of Europe. It would be picked off by the large predator Liopleurodon. Sometimes it will hunt game but most of the times will scavenge prey that is washed up on the beaches. When discovered it was mistaken for another large therapod dinosaur called Megalosaurus, but fossil evidence show that the two dinosaurs did not exist at the same time.