Sea raptor

The sea raptor is a species of predatory carnivorous mosasaurophioidean that lived during the Early Viridicene in the Primum Sea.

Description
Sea raptors could reach 5.1 meters (16.7 feet) in length, with a skull length of 500 millimeters (19.6 inches), a height of 1 meter (3.3 feet), and a weight of 102 kilograms (225 pounds). The skull was equipped with powerful jaws lined with around seventy curved, blade-like teeth. Sea raptors had streamline bodies equipped with small limbs and a large tail fluke to swim in high speeds underwater. The sea raptors had small arms with three claws on each forelimb. The first digit was shortest and the second was longest. They have powerful tails with large tail flukes that could propel them in high speeds. Sea raptors had a dark aqua head with a bluish grey body. They have white stripes that runs from its abdomen to its tail, which has scales that are colored periwinkle. They have a well-developed brain the size of an orca's, and large eyes that had a keen sense of sight. They also had an excellent sense of smell that could track down prey from a far distance.

Behaviour
Sea raptors frequently engage in surface behaviour such as breaching (jumping completely out of the water) and tail-slapping. These activities may have a variety of purposes, such as courtship, communication, dislodging parasites, or play. Sea raptors live in packs averagely consisting out of 12 adults and a varying number of juveniles. When foraging, sea raptors gather in groups of up to ten or more individuals, while the rest are left to take care of the juveniles. Due to their high intelligence, sea raptors are able to perform various tactics in order to take down their prey. One such tactic is called the "slash and dash", where individual sea raptors rip their preys using their blade-like teeth and escape to avoid attacks, this tactic is widely used by sea raptors and is one of the most common tactics known.

Diet
Sea raptors eat a wide range of prey, but they primarily feed on large ones such as basking dragons. Studies suggest that half of their diet consists out of medium-sized animals, and twenty percent consists out of other mosasaurophioideans. Though sea raptors mostly prey on big game, they prefer to forage on medium-sized animals since they are much easier to catch.

Life cycle
Female sea raptors begin to mature at around the age of 5 and reach peak fertility around 25. Females can often breed until age 40, followed by a rapid decrease in fertility. Sea raptors are among the oldest living magnasaur, and also one of the oldest living reptiles, as they have an average lifespan of 50 to 80 years, while some are claimed to have lived substantially longer. Males mate with females from other packs, which prevents inbreeding. Like other mosasaurophioideans, sea raptors are ovoviviparous, meaning that they carry their eggs inside their bodies. Their blade-like teeth play a role before birth in helping them feed on the mother's unfertilized ova (a behaviour known as oophagy). Gestation varies from 151 to 224 days on average, and some have been reported to have a longer gestation period. Weaning begins at about 12 months of age, and is complete by two years. Both male and female sea raptors participate in the care of the young. Males mature at the age of 10, but do not typically reproduce until age 16. Infanticide may occur, but is rare in sea raptors.