Search results
Results from the WOW.Com Content Network
In sharks, the ampullae of Lorenzini are electroreceptor organs. They number in the hundreds to thousands. Sharks use the ampullae of Lorenzini to detect the electromagnetic fields that all living things produce. [25] This helps sharks (particularly the hammerhead shark) find prey. The shark has the greatest electrical sensitivity of any animal.
For premium support please call: 800-290-4726 more ways to reach us
This may attract night-flying insects and aid in spore dispersal, but other functions may also be involved. [49] Quantula striata is the only known bioluminescent terrestrial mollusk. Pulses of light are emitted from a gland near the front of the foot and may have a communicative function, although the adaptive significance is not fully ...
Where electroreception does occur in these groups, it has secondarily been acquired in evolution, using organs other than and not homologous with ampullae of Lorenzini. [ 8 ] [ 27 ] Electric organs have evolved at least eight separate times, each one forming a clade : twice during the evolution of cartilaginous fishes, creating the electric ...
While Great White sharks are responsible for most attacks on humans, the team is also planning to test the method on other shark species, including bull and tiger sharks.
If you see a shark while in the water, keep eyes on the shark and back away slowly. Call for help and warn others as you retreat. Do not make erratic motion or sudden splashing. This can attract a ...
Experiments on blue jays suggest they form a search image for certain prey.. Visual predators may form what is termed a search image of certain prey.. Predators need not locate their host directly: Kestrels, for instance, are able to detect the faeces and urine of their prey (which reflect ultraviolet), allowing them to identify areas where there are large numbers of voles, for example.
Scientists have discovered a new, tiny species of self-illuminating sharks, according to a new Tulane University study. Glow-in-the-dark sharks: Scientists discover crazy new species in the Gulf ...