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Many fish also have chemoreceptors that are responsible for extraordinary senses of taste and smell. Although they have ears, many fish may not hear very well. Most fish have sensitive receptors that form the lateral line system, which detects gentle currents and vibrations, and senses the motion of nearby fish and prey. [1] Sharks can sense ...
Shark repellents can be used to protect people from sharks by driving the sharks away from areas where they are likely to harm human beings. In other applications, they can be used to keep sharks away from areas they may be a danger to themselves due to human activity. In this case, the shark repellent serves as a shark conservation method.
Sharks are much more sensitive to electric fields than electroreceptive freshwater fish, and indeed than any other animal, with a threshold of sensitivity as low as 5 nV/cm. The collagen jelly, a hydrogel , that fills the ampullae canals has one of the highest proton conductivity capabilities of any biological material.
Starting Aug. 26, the Evansville Water & Sewer Utility will change the disinfectant used in the water supply from chloramine to free chlorine. The switch will last until Oct. 26.
Shark attacks on humans are incredibly rare, but they do still happen from time to time. As with any danger that could potential end your life, companies have developed what they see as solutions ...
Fish that have barbels include the catfish, the carp, the goatfish, the hagfish, the sturgeon, the zebrafish, the black dragonfish and some species of shark such as the sawshark. Barbels house the taste buds of such fish and are used to search for food in murky water. The word barbel comes from Latin barbula 'little beard'. [1]
Don't think everyone would be so calm...
In the first 11 months of 2013, 633 sharks were captured in Queensland — more than 95% of those sharks died. [42] From 2013 to 2014, 667 sharks died in Queensland's "shark control" program, including great white sharks and critically endangered grey nurse sharks. [35] From 2014 to 2015, 621 sharks died in Queensland. [43]