Why Most Sand Tiger Sharks Die in the Womb HD

Sand tiger shark fetuses eat their siblings in the womb. Subscribe! http://bit.ly/1FkxVLb ‖ Twitter! https://twitter.com/gross_science ‖ Tumblr! http://grossscience.tumblr.com/ ↓Want more info?↓ Chapman, D., Wintner, S., Abercrombie, D., Ache, J., Bernard, A., Shivji, M., & Feldheim, K. (2013) The behavioural and genetic mating system of the sand tiger shark, Charcharias Taurus, an intrauterine cannibal. Biology Letters, 9: 20130003. http://rsbl.royalsocietypublishing.org/content/9/3/20130003 Credits: Host, Writer, Animator, Editor Anna Rothschild DP, Sound, Researcher, Intern Extraordinaire Kristen Clark Many thanks to Dr. Demian Chapman and Dr. Kevin Feldheim. Slow Bass Music Provided by APM Images Hatchling and Embryo ©Debra Abercrombie Sand Tiger Sharks Mating ©Grant Kennedy Carcharias taurus Newport Wikimedia Commons/Jeff Kubina “We Can Do It!” J. Howard Miller/Public Domain SFX Cockroaches Freesound/StateAardvark¬ (used with permission from author) Squeak Pack/squeak_10 Freesound/Corsica_S Running water bubbles-02 Freesound/kijjaz MouthPop Freesound/HerbertBoland Zombie pack vol. 1/Zombie eating flesh Freesound/14red0 Burps/wetbelch4 Freesound/plingativator 120 horror strings Freesound/Thirsk Swishes Freesound/pogotron Produced by WGBH for PBS Digital Studios