As with other entities in nature, swordfish provides a larger value for the ecosystem and for humans while also advancing their own individual needs as a species to reproduce and survive. Ecologically, they play a key role in marine food chains. For humans, swordfish are well known for recreational fishing and cuisine, and their beauty, grace, and behavior adds to the mystery and wonder of nature. However, there also are concerns about their conservation status, due to overfishing, and mercury contamination has led to warnings about overconsumption (EPA 2004). Human efforts have led to some awareness of the risk to their survival and reduction of their availability in cuisine.