It’s quite likely that you have access to sharks, a shark cage, and a large bucket of blood. But if you have all these things, you should still try these preferences at home.
In the video above, former NASA engineer YouTuber Mark Rober worked with the Discovery Channel team for Shark Week to devise an experiment to test which substance sharks are more attracted to: fish blood than human blood. Okay, so for obvious reasons Rober uses cow blood as a substitute for humans, but Rober assures us that “all mammalian blood smells essentially the same to sharks”, so the results will not be affected.
Next to marine biologist Luke Tipple, Rober goes to the Bahamas and uses a controlled experiment with three anchored surfboards to release the different blood types in the water in the same area, but at a distance from each other. They also release odorless seawater in the same way to test whether the surfboards themselves are targets of the sharks. Then they sit back with their filming drones and wait for the teeth of beasts to be seen.
The TL: DW version? Fish is blood wei more attractive to sharks than mammalian blood.
It’s still worth hanging out at the end of the video, to see Rober jump into a shark cage for a pretty tight fishblood feeding. Yikes.
