Biodiversity for our future.

This editorial introduces a Special Issue on the topic "Alternative Models for Marine Toxicological Investigations". Today, the terrestrial and marine environments are being changed by anthropogenic activities at a very high rate. Rapid change, coupled with uncontrolled exploitation of natural resources e.g., lands, mines, waters, organisms etc., as well as industrialization, has resulted in a grave situation for the global environment. On the Year of Biodiversity this special issue summarises the current situation in the marine environment and discusses innovative ecotoxicological tests related to the protection of marine organisms.