There are a few seas in the world that would give you a run for your money if you went for a swim in any of them. These seas, for justified reasons, are known as the deadly seas of the world. Here is a look at the seven deadly seas of all time:
1. Cretaceous Sea:
According to a report by BBC, the Cretaceous sea is the most deadly sea of the world. There is a legend about a bird called Hesperornis, who devoted much of its time on the rocky ledges above the surface of water, but it was continuously attacked by the mosasaur living in the water, called Halisaurus.
2. The Jurassic Sea:
After the Cretaceous sea, the Jurassic sea is rated as the deadliest sea. The Jurassic sea contains many ferocious carnivorous predators, including sharks, such as hybodus and the horrifying crocodilian Metriorhynchus. However, the nastiest predator that would have had any of these beasts for an evening meal is Liopleurodon. The Liopleurodon belongs to a family of marine reptiles known as Pliosaurs, all of which have a great sense of smell.
3. The Pliocene sea: A few million years ago, the coast of Peru was a lonely, desert area. Therefore, the only animals constituting the marine population were a group of amphibious sloths lurking near the coast, and of course, some terrifying carnivorous fish. The Megalodan was a descendent of the great white shark, but thankfully, was shorter than the shark by about 16 meters. Its prey was mostly Odobenocetops, an extinct whale that spent most of its life searching for food on the sea floor.
4. The Eocene sea: Mammals were the main residents of the coast of the Eocene sea and waded into the sea. Basilosaurus was one of the earliest whales to reside in the sea. It owned a set of brutally sharp teeth and an incredible height of 21 meters.
5. The Devonian sea: The Devonian Sea sheltered many ferocious sharks such as Stethacanthus, a deadly shark whose ridiculous dorsal fins resembled an anvil. However, it was nothing compared to the enormous leviathan, Dunkleosteus. This huge fish had a set of razor sharp teeth that could have sliced boulders in half.
6. The Triassic sea: It consists of a variety of marine reptiles such as the Nothosaur, the beast who was greatly similar to a lizard, and the Tanystropheus that had an amazingly long neck. However, they were no match for the Cymbospondylus, who was more or less 10 meters in length although still dwarf compared to its grand children in the Jurassic period.
7. The Ordovician sea: During that time, oxygen levels in the air and plants on land were indeed minimum, but the Ordovician sea was abundantly full of beasts such as Sea scorpions and orthocones.