Follow a curious and adventurous dolichorhynchops – familiarly known as a "dolly" – as she travels through the most dangerous oceans in history. Along the way, she encounters long-necked plesiosaurs, giant turtles, enormous fish, fierce sharks, and the most dangerous sea monster of all, the mosasaur.

SEA MONSTERS weaves together a series of paleontological digs from around the globe in a compelling story about scientists working as detectives to answer questions about this ancient and mysterious ocean world. Viewers accompany modern and historical fossil hunters to remote locations as they excavate the remains of some of the most awe-inspiring creatures of all time, unearthing amazing discoveries which shed light on exactly what happened to the film’s incredible cast of characters.