>zebra muscles in the Great Lakes, introduced to prey upon some 'bad guy' or other, and now taking over the niche of native clams and muscles
zebra muscles weren't added on purpose...they were added by some trans-Atlantic freighters dumping ballast water that should not have been dumped in the Great Lakes
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zebra muscles weren't added on purpose...they were added by some trans-Atlantic freighters dumping ballast water that should not have been dumped in the Great Lakes