This is absolutely disgusting! I noted a post that dolphins (and hopefully other cetaceans) will be here long after we are gone...I say amen to that! It seems as if humans have to mess up things everywhere they go. This is but the latest in a long line of human-caused extinctions stretching back to the Pleistocene Era, if not earlier.
Everything has its place in the environment...trust that this extinction WILL have some sort of environmental impact.