Blue sharks are known for their distinct coloring, which allows them to blend in with ocean water. From above, the water appears darker and camouflages the shark's dark blue back, while its white underside resembles the sunlit ocean surface when seen from below. As a pelagic species, blue sharks inhabit the open water and often travel in large schools made up of only males or females.Continue Reading
The blue shark's body is gracefully contoured for rapid, fluid movement. Its slender form tapers to an elongated tail fin that bends from side to side, allowing it to swim about 35 kilometers per hour on average. Adult sharks often weigh over 240 kilograms and reach up to 4 meters in length.
Blue sharks enjoy a diet of octopus, squid and fish and some species of seabirds, but they are rarely preyed upon by other animals. Their serrated, triangular teeth grow in rows, which are regularly replenished in an eight-day to 10-day cycle.
Female blue sharks have skin that is approximately three times thicker than their male counterparts, preventing extensive injury when they are bitten during mating rituals. These aquatic creatures are pregnant for roughly nine to 12 months before giving birth to live young. An average litter contains 35 pups; as of 2014, the highest recorded number is 135, according to MarineBio.Learn more about Sharks
Great white sharks are solitary animals, but they have been observed traveling in pairs and communicating through body language that includes stiff and arched bodies, open mouths, swimming patterns, breaching and tail slaps. Sharks are careful to preserve space between themselves, and the majority of communication revolves around discouraging others from coming too close or interfering with prey.Full Answer >
If sharks became extinct, there would be ecological repercussions, such as small animal extinction, algae overgrowth and coral reef death. Sharks are a crucial part of the marine ecosystem and are necessary for the world's oceans to operate.Full Answer >
Scholastic asserts that sharks are especially well adapted to an ocean environment due to their physical features, such as streamlined bodies for efficient swimming, rows of sharp teeth that grow back after they fall out and gills that extract oxygen from the water so they do not have to surface to breathe. Sharks live in all of Earth's oceans and migrate to find food.Full Answer >
Great white sharks do not eat killer whales, and it is, in fact, the other way around. Research has shown that the screams of killer whales have been known to drive away marine life, like great white sharks, hammerheads and even dolphins from different environments. This is because killer whales have been known to prey on sharks of all types and species.Full Answer >