Oceana divers documenting the state of ecological communities in Cabrera Marine Park along the Mediterranean Coast encountered swarms of jellyfish, with numbers in the thousands, 30 miles south of the area.
On a seamount some 130 meters from the surface, Oceana's unmanned submarine robot revealed especially high concentrations of these jellies that have wreaked havoc along the Mediterranean in years past. Oceana is working to have the area added to the national park.
High concentrations of jellyfish are not just a local problem. The same factors that allow jellyfish to "over" flourish in many parts of the world are at play here: Essentially humans are creating a jellyfish wonderland by over-fishing and polluting our oceans.
Warmer water temperatures due to climate change and an elevated presence of mineral nutrients thanks to urban and agricultural run-off create pristine conditions for jellyfish to multiply. By fishing out larger species, fewer predators are around to counterbalance the thriving jelly population.
The end result is an ecosystem out of whack, and only simultaneously addressing all sides of the problem will allow natural factors to take hold and control jellyfish populations.
- Presidential Task Force Releases Bold Recommendations for Tackling Seafood Fraud and Illegal Fishing Posted Tue, December 16, 2014
- Recent Baltimore Sun Articles Highlight Issues with Federal Seafood Fraud Enforcement Posted Fri, December 12, 2014
- Ocean Roundup: Humpback Whales Communicate to Feed at Night, Bangladesh Oil Spill Threatening Sundarbans Mangroves, and More Posted Wed, December 17, 2014
- Creature Feature: Magellanic Penguin Posted Wed, December 10, 2014
- Ocean Roundup: Filefish Use Chemical Scent to Camouflage, Bangladesh Oil Spill Threatening Endangered Dolphins, and More Posted Mon, December 15, 2014