1.   Most threatening of these for the Marine ecosystem is the exposure to increased ultra-violet radiation through the depletion of the ozone layer.

2.   The rapid Decline in the number of great sharks is disrupting the Marine ecosystem.

3.   Furthermore, there is no evidence linking the seals with a decrease in fishing yields or on the status of the marine ecosystem.

4.   According to the Prince, their disappearance is one of the strongest indicators of the marine ecosystem of the Mediterranean.

5.   Biologists are just now beginning to understand the complexities of the Antarctic marine ecosystem.

6.   Even short of an outright collapse, fishing down the food web can have untoward effects on marine ecosystems, Pauly said.

7.   Experts say a whole marine ecosystem of interdependent species, ranging from invisible plankton to ungainly brown pelicans, will be helped.

8.   Environmental factors and human activities are responsible for the poor health of coral reefs and the marine ecosystems they support, Yozell said.

9.   If this quest is pursued to its logical end, scientists warn, it will lead to a wholesale collapse of marine ecosystems.

10.   Industrial and agricultural pollution, commercial development and the destruction of wetlands and estuaries have taken their toll on fragile marine ecosystems.