Shortfin Mako Shark under Threat Animals Oceanography 

Shortfin Mako Shark under Threat

By Kate Stone The shortfin mako shark is the fastest shark in the world. Its top cruising speed has been recorded at 40 kilometers per hour (kph), or 25 mph, with bursts of up to 74 kph, or 46 mph. Because shortfin makos are so fast, collecting accurate data about them has been especially difficult. Fortunately, new real-time satellite tracking technology has enabled researchers to gather much more accurate information about these amazing sharks. Unfortunately, the data is shockingly grim: shortfin mako sharks are being killed in fisheries at a…

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skeleton Animals Biology Oceanography Science & Art 

Preserving a Soft Skeleton: Backs without Bones

By Sebastien Enault What are shark skeletons made of? The skeleton of modern sharks, rays, and skates consists of cartilage, a connective tissue that is lighter and more flexible than bone. Most people closely associate the skeleton with bone, and are familiar with the skeletal structure of many ancient and modern vertebrates, which are beautifully described in a vast number of anatomical works and frequently displayed in most natural history museums. However, while sharks and rays are very popular in aquariums around the world, few people actually know what their…

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