Overfishing of sharks is harming coral reefs
A new study shows that a decline in shark populations can be detrimental to coral reefs. When there are fewer sharks on a reef, there is an increase in mid-level predators, like snappers, and a reduction in the number of herbivores, like parrotfish. Herbivores are crucial to the health of coral reefs so without them the reefs suffer.
Pacific islands face fishing crisis
As populations on the Pacific islands grow, finding enough fish to feed everyone is becoming more and more difficult. The decline in fish is due to several problems including environmental pollution, rising temperatures, and increasing acidity which have all damaged the reefs that these fish need to live. In addition to declining fish populations, the human population is rapidly expanding. This is causing fishers to venture further out in the ocean search of tuna, which requires more money for fuel and can be dangerous in small fishing boats. Some say the solution is to install Fish Aggregating Devices (FADs) to attract more fish near the coast, but fishing with the help of FADs has plenty of environmental consequences.
Surf’s up: The moment playful sea lions discover they can SURF crashing waves onto the beach
Wildlife photographer Brad Hill captured an incredible scene when a troupe of 20 sea lions surfed the waves on Vancouver Island. Hill said they were surfing for about 30 minutes and were extremely selective of the waves they chose to ride. Check out his amazing pictures.
Copyright © 2013 by Marine Science Today, a publication of Marine Science Today LLC.