Please try Ocean Conservancy, International Coastal Cleanup, Ocean Action Network, Trash Free Seas, Trash Free Seas Alliance and Rippl are registered trademarks of Ocean Conservancy. But 25% of shark species are currently listed as endangered, threatened or near threatened by extinction by the International Union for the Conservation of Nature. Analysis of the tissue of 30 dusky, sandbar and great white sharks caught by long lines and in shark nets off the NSW coast found high levels of metals including mercury "that may have negative implications for human consumers", the study published in the Marine Pollution Bulletin found. In fact, sharks actually produce a very high yield of meat based on their body weight. How to Draw a Dusky Shark - Step-by-Step Tutorial. If you catch a shark and are unsure of the species identification, release it. Zoo Animals. In the study, we actually avoided food when in those conditions! Dr Reichelt-Brushett also noted that the sharks tested were from eastern Australia where pollution levels of mercury and other metals were relatively low. I’m worrie… Dusky shark belongs to the group of requiem sharks. I’m worried about a new threat, too. According to the Food Standards Australia New Zealand website, fish is an excellent source of protein but the consumption of some species should be limited because of higher levels of mercury. The dusky shark can grow to 4 meters (13 feet) in length. Second dorsal fin has a free tip length rarely more than twice the fin height The dusky shark (Carcharhinus obscurus) is a species of requiem shark, in the family Carcharhinidae, occurring in tropical and warm-temperate continental seas worldwide.A generalist apex predator, the dusky shark can be found from the coast to the outer continental shelf and adjacent pelagic waters, and has been recorded from a depth of 400 m (1,300 ft). u Measured as total length. Male great white shark - one to avoid on the dinner table as well. We’re dedicated to working with indigenous communities, legislators, scientists and people like you to advocate for science-based solutions to protect this fragile ecosystem. Today, it’s still a common food in places across the globe. occurs when the ocean absorbs carbon and becomes more acidic, which hurts my sense of smell! Makos, blues, etc are legal...eat the makos and to each their own for any other nonproteted species. In the latest study, published in Marine and Coastal Fisheries, Bangley and SERC’s Fisheries Conservation Lab fitted 23 dusky sharks with special acoustic telemetry tags. "The large males of the species are the ones to avoid in terms of accumulation," Dr Reichelt-Brushett said, adding that females may reduce their levels through giving birth. Aside from shark meat and fins, consumers should also be wary of excess consumption of products made from shark livers, such as fish oil. 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