Showing posts with label run-off. Show all posts
Showing posts with label run-off. Show all posts

Saturday, November 20, 2010

Ultramarine - Seahorses

Ocean images often trigger discussion around protection. Here is an Ultramarine YouTube clip of some iconic ocean animals that need our thought, consideration and protection.

Seahorses don't have a tail fin, in fact they are decidedly short of fins. Their heads bend forward and don't line up with their backbone, as it does in other fish, giving them a horsey look. They suck food up through their long straw-like mouths after snapping their tiny jaws shut. Their body armour is made up of scales fused together, a less than appetizing meal for many would be predators. It doesn't help, though, for their biggest problem is people.

All around the world seahorses are loved and collected, either for Asian medicine or keepsakes. Living in shallow coastal waters these little fish are subjected to habitat degradation from land-based activities. Stormwater run-off quality is an often cited  reason. Teachers wishing to incorporate studies on keeping our coastal waters clean will be inspired by AUSMEPA's free online education materials related to Marine Stormwater Pollution - here.

Thursday, September 10, 2009

Deadly Seaweed in Europe Could Be Just a Warning to Australians


Recent reports of death and human health concerns from France and England revolve around the humble Sea Lettuce or Ulva sp. It appears that high growth of the common algae has resulted in the cyclic die-off forming mounds of decaying weed along some shorelines. As the weed dries up it forms a white crust sealing in the gases produced as a result of decomposition. When the crust is broken highly concentrated gasses are released where the foot falls.

These high growth events are not known yet in Australia but wherever stormwater run-off carries high nutrients from the drains, creeks and rivers to shallow coastal waters Ulva becomes more prolific.

AUSMEPA and it's other Education Partners in Australia are working to educate about what stormwater brings with it and how we can change our own contribution to the problem. Learn more at http://www.ausmepa.org.au/marine-stormwater-pollution/