3. Electronic noses

In the event that you think disposing of intrusive species ashore is a test, you haven't had a go at doing it in the profundities of the sea. Robots that can slither over the ocean bottom dispatching intruders with toxic substances or electric stun are being researched as a potential instrument for battling such species. The innovation is currently being tried to control crown-of-thistles starfish, which have crushed Great Barrier Reef corals as of late, and intrusive lionfish, which are rivaling local species in the Caribbean Sea.