Month: April 2011

Facts About Sharks

SharkSharks are vulnerable to fishing pressure because they:

* Grow slowly
* Take many years to mature (12 to 18 years in some species)
* Often reproduce only every other year
* Have few young per brood (only 2 pups in some species)
* Have specific requirements for nursery areas (bays and estuaries)
* Are caught in many types of fishing gear (hook and line, gillnet, trawl)

Sharks have adaptations allowing them to be apex predators including:

* Teeth that are replaced throughout their life
* Sensitive smell receptors
* Eyes that adapt quickly to low light levels
* Lateral line receptors that sense movement in the water
* Electroreceptors that detect electrical fields due to the presence of prey