Future of shipbuilding

http://www.marineinsight.com/future-shipping/shipbuilding-technologies/

Here are some intersting technologies that can be used in shipbuilding in the future. These technologies ensure ship building and cruising can be even more ecological and cost-efficient in the future. For example, ships can be lighter and they could use renewable energy sources.

One cool idea I have is to take the ecosystem of the ocean and caribbean countries into account. There are already parks in some ships. Could the species living in the water and in the islands benefit from cruise ships sailing by? That's definitely a topic worth exploring.