Same goes for plants. My biology teacher had us watch this show on hydrophilia. A public aquarium, on the coast of the Mediterrarean Sea, had hydrophilia in most of their tanks and part of the plant got into the sea. It spread out over most of the bottom of the sea and killed the native plants taking away food from the plant eating marine life. Yadda Yadda Yadda. The same plant (like the same excact plant with the same excact DNA and stuff) was found off the coast of Australia. Then later it said that there was a smaller outbreak off the coast of San Diego and to take care of it the biologist but a big tarp over the plant and filled it with chlorine to kill the plants. Now I believe the plant is banned.