Tag: ocean
Colony
The Boulders Penguin Colony was established in 1983 and numbers increased from surrounding island colonies to bring breeding numbers to 3 900 birds in 2005. Since then there has been a decrease. The 2011 figures sit at around 2100 birds at Boulders Penguin Colony. The decline at Boulders and the global decline is the suspected result of:
* habitat destruction
* effects of oil spills and other marine pollution
* impacts of global warming on fish stocks and fish movement
* overfishing
* irresponsible tourism activities
* domestic pets/animals
Contaminated
The Indian Ocean garbage patch, discovered in 2010, is a gyre of marine litter suspended in the upper water column of the central Indian Ocean, specifically the Indian Ocean Gyre, one of the five major oceanic gyres. The patch does not appear as a continuous debris field. As with other patches in each of the five oceanic gyres, the plastics in it break down to ever smaller particles, and to constituent polymers. As with the other patches, the field constitutes an elevated level of pelagic plastics, chemical sludge, and other debris; primarily particles that are invisible to the naked eye.



