The reactions could result in many more marine species being lost and eventually impacting humans. So if sea turtles go extinct, there would be a serious decline in sea grass beds and a decline in all the other species dependant upon the grass beds for survival. All parts of an ecosystem are important, if you lose one, the rest will eventually follow. Beaches and dune systems do not get very many nutrients during the year, so very little vegetation grows on the dunes and no vegetation grows on the beach itself. This is because sand does not hold nutrients very well.
Sea turtles use beaches and the lower dunes to nest and lay their eggs.
Sea turtles lay around 100 eggs in a nest and lay between 3 and 7 nests during the summer nesting season. Along a 20 mile stretch of beach on the east coast of Florida sea turtles lay over 150,000 lbs of eggs in the sand. Not every nest will hatch, not every egg in a nest will hatch, and not all of the hatchlings in a nest will make it out of the nest. All the unhatched nests, eggs and trapped hatchlings are very good sources of nutrients for the dune vegetation, even the left over egg shells from hatched eggs provide some nutrients. Dune vegetation is able to grow and become stronger with the presence of nutrients from turtle eggs.