11.   That left the hippo, a creature so aquatic that it gives birth underwater.

12.   The aquatic creatures will be housed in special tanks filled with aquifer water and designed to mimic currents in the natural rivers.

13.   In water, it can kill fish and other aquatic creatures, they say.

14.   Local environmentalists say formaldehyde can cause cancer after long exposure and kill aquatic creatures when dissolved in water.