The frilled shark is named after its six gills. Image credit: OpenCage
Even though the shark is not at risk, according to the IUCN, over-fishing leads to a decrease in the available food for these sharks, and in most cases, they get tangled up in fishing webs, which can be a threat to the species. Especially because frilled shark babies take so long to develop, accidental bycatching of the female sharks can put a strain on their numbers.