During the period from 12 to 14 July, summer camp “Discovering Coastal Secrets” for Latvian new riders took place near coastline of Gulf of Riga near Salacgrīva.

On 14 July, the LIFE REEF project team introduced young students to marine biodiversity. At the beginning of the day, Solvita Strāķe, the leading researcher of the Latvian Institute of Aquatic Ecology, and her assistant, Elsa Birbele talked about species of algae, shellfish and crustacean that are present on the coastline. Special attention was paid to invasive species, and young students were introduced to recognize three of invasive alien species in the Baltic Sea - mud crab, Chinese mitten crab and round goby.

After learning theoretical knowledge, young people went to sea and drew a research network into the sea. The benefit of the research net was a surprise to even the experienced researchers of the Latvian Institute of Aquatic Ecology. Round goby and a killer shrimp were found in the survey net, pulled by young students.

For the first time in the Baltic Sea, these killer shrimps were registered in 2003 along the coast of Kaliningrad, owned by Poland and Russia. The killer shrimps in the Baltic Sea came from the Black or Caspian Sea, most likely with ballast waters or hiding in biological paucities. Killer shrimps from port to port are distributed by smaller maritime transport, hiding in biological paucities or fishery equipment, and can move to a neighbouring coast, also by catching up with drifting plants or man-made waste.

The day of the sea theme was assessed by the members of Latvia's New riders summer camp as the most interesting and informative experience in marine exploration.