Predicting the likely impacts of an introduced species is extremely difficult. Some species quietly assimilate into the recipient regions without causing any noticeable impact. Others thrive and outcompete native species. The Solution Controlling marine invaders after they have successfully colonized is, in most cases, extremely difficult and highly costly. Eradication is generally considered impossible.
Most marine invaders have a planktonic larval stage which allows for wide dissemination.
Introducing other predators or diseases to control the invaders can lead to further ecological damage. Solutions to at least reduce the possibility of future invasions are available.