Super weird and awesome lower jaw “shortfin mako” actually isurus oxyrinchus (desori) shark tooth found from these incredible Sand Mine ancient ocean floor and fossil layers at @palmettofossilexcursions we dug through last weekend searching for interesting fossils and shark teeth. This was definitely a keeper for @endlesssearch_! | SHRKco

341K views · 1.4K reactions | The Shortfin Mako Shark • Scientific name: Isurus oxyrinchus • Fastest shark in the world: up to 50 mph • Largest brain to body ratios of all sharks • Average size: 10', 350 lb. • Weight Record: 1,300 lbs. • Length Record: 14' 6" • One of only four known warm-blooded sharks • 30 year lifespan | Mako Boats | Facebook

These massive shortfin mako sharks are even scaring off great whites! 🦈 #SharkWeek continues all week at 8p on #Discovery. | Shark Week

Blink and you'll miss the shortfin mako shark - it's the fastest shark in the sea! Learn more in our Marine Life Encyclopedia: http://bit.ly/2JbQEyL | Oceana

The shortfin mako has an enormous propulsion system and this video, by our Resident Research Scientist, Dr. Josh Moyer, provides the perfect view. The equal sized lobes of the caudal fin increases the area of the tail that pushes against the water. This drives the shark forward during a burst of speed and also allows the shortfin mako to retain the crown of fastest shark in the ocean. 🦈 Sulikowski Shark and Fish Conservation Lab, ABC4EXPLORE, Living Sharks Museum, MakoPako -Basque Shark Diving-