Pearls and oil

Since the birth of internal combustion engine and consequent need of petrol, petroleum race started to be more and more frantic and, albeit the growing adopted tecnology to avoid…

The large Pinctadas

The large Pinctadas

Two sister species The class Bivalvia brings together molluscs whose transversally-flattened body lies protected between two lateral, calcified valves. Families con be designated according to characteristics either of the…