1.   Certified divers can explore the crystal waters of San Solomon Springs and night dive to see two rare aquatic species.

2.   Dams can have a devastating effect on some aquatic species, scientists have learned.

3.   High rainfall during El Nino years produces high river outflow to the general benefit of aquatic species in areas such as the San Francisco Bay.

4.   Phosphorus robs water of the oxygen that sustains fish and other aquatic species, turning waterways into foul green pools of algae.

5.   The more critical concern is the impact on aquatic species, which can build up surprisingly high concentrations of chemical pollutants from barely detectable levels.

6.   Those roads, say Dombeck and many scientists, have caused great harm to aquatic species by producing smothering silt that oozes into streams.

7.   Great Lakes water levels are expected to drop, which would affect navigation, water supplies and aquatic species.

8.   U.S. and Canadian laws now ban bilge-water dumping to combat the introduction of aquatic species from ships carrying ballast from foreign waters.

9.   The flight will also permit scientists to study the human reactions to space flight and observe the reproduction and growth of aquatic species in weightless conditions.