Oceanic grey shark (SciiFii)

The oceanic grey shark (Nanocarcharias luca) is a species of shark that originally did not exist, but has since been created by SciiFii and introduced throughout the tropical, subtropical, and temperate regions of the Pacific Ocean off the coast of North America and South America to help boost biodiversity. Female oceanic grey sharks reach sexual maturity around the age of 6 with an average fork-length (tip of the nose to fork in the tail) of 154.9 centimeters, while males tend to reach maturity around age 5 with an average fork-length of 151.6 centimeters. Females can grow to 2–2.5 meters (6.6–8.2 feet), males up to 1.8 meters (5.9 feet). Its body color can vary from a grey to a brownish grey to a bronze, with a white or pale underside. Despite its name, the oceanic grey sharks are also able to tolerate and thrive in brackish waters as well as pure freshwater lakes and rivers. Because of this, the oceanic grey sharks are very commonly found in the rivers and lakes of the Pacific coasts of North and South America. Oceanic grey sharks swim alone or gather in sex-segregated schools that vary in size. Natural predators of the oceanic grey shark includes the bull shark, tiger shark, and, rarely, great white sharks and killer whales. The oceanic grey shark itself preys on fish (including small ray-finned fish and rays to name a few), crabs, snails, and worms, and is one of the only shark species (along with the bonnethead) known to be omnivorous, being known to feed on seagrass and a variety of brackish and freshwater aquatic plants. Oceanic grey sharks are viviparous. The embryos are supported in placental yolk sac inside the mother. Females exhibit both biennial and triennial reproductive cycles, ovulate in early summer, and give birth to an average of thirteen pups, which they carry for 9 months before giving birth. The longevity of the oceanic grey shark is typically 41-53 years in the wild, although the captive specimens have been known to live slightly longer. The conservation status of the oceanic grey shark is Least Concern due to successful conservation efforts, the oceanic grey shark's wide range and its tolerance to many of the human activities.