The diamond dust has the same properties of larger diamonds, but the tiny diamond particles cannot be set into jewelry by themselves. It is carefully gathered after cutting, and comes to good purpose in many industries.
Larger sharks, including great whites, tiger sharks and whale sharks, travel more widely and have greater depth range in the water column. Great whites dive deeper than 1km and are seasonal visitors to temperate coastal waters, lured by the likelihood of a feed at seal and sea-lion rookeries and haul-out areas.
Hexanchiform sharks have a single dorsal fin, either six or seven gill slits (versus the 5 found in all other existing sharks), and no nictitating membranes (protective third eyelids) . The frilled shark, Chlamydoselachus anguineus, is currently one of only two known species of frilled sharks.The southern African frill shark, C. africana, was recently discovered (2009) off southern Angola, Namibia and South Africa.rilled sharks, Chlamydoselachus anguineus (Garman, 1884), aka frill sharks, frill-gilled sharks, Greenland sharks, scaffold sharks, and silk sharks are members of the most ancient frill and cow sharks order, Hexanchiformes.