Physical appearance and biologyEdit
Elasmosaurus was a large plesiosaur which was 15 metres long, most of its length being its neck and tail. It had a barrel-shaped body with four diamond-shaped flippers. It was a graceful swimmer. This was achieved by keeping its neck in front of it. Any bends or kinks would negatively affect its swimming abilties. Elasmosaurus had 75 vertebrae in its neck.
Behaviour and traitsEdit
When hunting, Elasmosaurus would dive beneath a shoal of fish. As its body was so far away, the fish wouldn't notice the danger and would swim upwards, securing an easy catch. Periodically, Elasmosaurus would venture into shallow waters where it would dive to the sea bed to snatch and swallow small pebbles. These stones aided in grinding up food in Elasmosaurus' stomach.
Elasmosaurus were viviparous, meaning that they gave birth to live young since it would be too cumbersome to go onto dry land.
Whilst searching for the Giant Mosasaur, Nigel Marven's RV recorded a group of Elasmosaurus swimming alongside The Ancient Mariner. As Nigel positioned the RV, one curious Elasmosaurus investigated the camera and knocked it. As the group passed, Nigel caught a glimpse of another Cretaceous marine reptile, an Archelon.