Ballast water is one of the most prominent topics in the maritime industry today. It spans the shipping industry, the environmental community, and the actions of maritime industry policymakers. Because it is so far reaching, it is important to understand not only what ballast water is, but how it affects the marine environment and maritime industry.
“What defines an invasive species? Are humans an invasive species?”, one of my students asked me during lunch. Earlier that day he had asked a similar question in front of the whole group, but I had responded that we didn’t have enough time to get into a long debate about the contentious definition of an invasive species. I said that if he wanted, we could debate whether or not humans were an invasive species over lunch.
The European shore crab, scientific name Carcinus maenus, is in the process of taking over the world. This little creature, also frequently referred to as the green crab, features all the characteristics of your average crab, but now also has a feature most animals do not: it occupies five of the world’s seven continents.