1. The sand tiger shark, Carcharias taurus (which this bio is about)
2. The Indian sand tiger shark, Carcharias tricuspidatus; very little is known about them, but it’s suspected they are the same as our C. taurus.
3. The small-toothed sand tiger shark, Odontaspis ferox. This species is cosmopolitan, and inhabits deeper waters than C. taurus.
4. The large-eyed sand tiger shark, Odontaspis noronhai; very little is known about them other than they are a deep water shark roaming the Americas.
He went on. “They form massive schools in caves and it’s so beautiful! I'll find you a link!”
“I'd appreciate a link, thanks!”
I mean, how could I pass up an opportunity to see another shark video? Exactly, I just couldn’t.
I think I watched the video at least three times on replay. I replied with, “Can I say I'm envious of your life? Because I totally am. You live in AU AND got to experience this beautiful phenomenon. Jealous.”
Speaking of fish, their diet is mostly made up of them, but also includes crustaceans, squid, skates and- le gasp!- other sharks. In order to make hunting for these meals even easier, the sand tiger shark can gulp air from the surface, making its stomach act almost like a swim bladder in that it can now effortlessly be suspended in the water column. Smart critters.
Another thing that’s smart about them? Cannibalism. Specifically their intrauterine cannibalism. These sharks are the only kind (thus far, at least) to participate in “embryophagy” or “adelphophagy,” in where instead of “oophagy” where sharks eat unfertilized eggs, these sharks eat each other… already developed. Yup, literally eating their brothers and sisters. Four for you, sand tiger shark. You go, sand tiger shark.
Want to learn more about sand tiger sharks? Check out this cool video.