Certain species of longtail carpet sharks (or bamboo sharks) have an unusual means of locomotion. Instead of swimming, these sharks wriggle their bodies and push against the floor with their pectoral and pelvic fins. It's a strange sight to behold.
This particular species, Hemiscyllium halmahera, is described for the first time in the July 2013 issue of aqua, International Journal of Ichthyology. Gerald R. Allen, a research associate at the Western Australian Museum, Mark V. Erdmann, of Conservation International Indonesia, and Christine L. Dudgeon, of the University of Queensland School of Veterinary Science, caught two members of Hemiscyllium halmahera off the coast of Ternate, the Maluku Islands, Indonesia.
If you're looking for more information on walking sharks, a great deal of information exists about Hemiscyllium ocellatum, the epaulette shark, which was first described in scientific literature in 1788.