Hi, it's Katrina! In this video, we're taking a journey back millions of years to explore the terrifying giants that once ruled the ancient oceans. From the armored jaws of the Dunkleosteus to the massive, lung-breathing Liopleurodon, these predators were the true kings of the deep. Join us as we look at their incredible size, hunting tactics, and the fossil discoveries that revealed their existence. 00:00 Liopleurodon: The apex predator of the late Jurassic. 01:24 Tanystropheus: The bizarre "long-necked one" that fished from the shore. 02:30 Kronosaurus: A 10-ton reptile named after a Greek Titan. 04:17 Shastasaurus: The massive suction feeder that evolved before whales. 05:53 Dunkleosteus: The terrifying armored fish with self-sharpening "teeth." 07:38 Eurypterid: The human-sized sea scorpions of ancient Iowa. Subscribe to Epic Wildlife http://goo.gl/6rzs5u #prehistoricanimal #seacreatures #seamonster #dinosaurs