Discovery of a vector for two Elasmobranch Cestode species. Furthermore, their mating period is one of the longest recorded in elasmobranch fish. Species in the order consist of intestinal parasites of elasmobranch fishes. Sharks, rays and relatives such as elasmobranch fishes lack the opercular series. Hybodontiformes are a type of elasmobranch shark, just outside Neoselachians. Iodine should also be administered through water changes and/or Elasmobranch vitamins. It has been previously described as being an elasmobranch, an agnathan, and an antiarch. Electric organs have evolved at least six times in various teleost and elasmobranch fish. The chain catshark is one of four elasmobranch species shown to possesses biofluorescent properties. The most common vertebrate remains belong to the elasmobranch fish "Onchopristis numidus". Analysis of permanent magnets as elasmobranch bycatch reduction devices in hook-and-line and longline trials. Marine elasmobranch fishes such as sharks, stingrays etc. Many surviving orders of elasmobranch date back to the Cretaceous, or earlier. The Use of Permanent Magnets to Reduce Elasmobranch Encounter with a Simulated Beach Net. He received the Eugenie Clark Scientific Explorers Award from the American Elasmobranch Society in 2008.