Portal:Sharks/Did you know/10


 * ... that the Portuguese dogfish is the deepest-living shark known, found as far down as 3675 m?
 * ... that the single known specimen of the Irrawaddy river shark was generally dismissed as an abnormal bull shark until 2005?
 * ... that the green lanternshark often preys on squid and octopus much larger than itself, which it may overwhelm by attacking in packs?
 * ... that the barbeled houndshark is the only shark with a spherical placenta?
 * ... that the cookiecutter shark may use the absence of bioluminescence to attract prey?