In the post last week about marine pollution we talked about that marine debris can be a new means of transport for species to cross the globe. What is alien species or invasive species. we hear more and more about it, but what are they? And what does it really mean. Alien species are organisms READ MORE
There are over 25,000 identified species of fish on the earth, but it is believed that there might still be over 15,000 fish species that have not yet been identified. There are more species of fish then all the species of amphibians (frogs), reptiles, birds and mammals combined.