For millennia, climatological and geological processes created the necessary conditions for the tropical Indo-Pacific to evolve into the most diverse area among marine ecosystems. The Indonesian-Philippines area is the epicentre of this amazing biodiversity. Award-winning photographer Constantinos Petrinos chose the Lembeh Strait in North Sulawesi, Indonesia to document this fabulous underwater wonderland. He spent 5 months in the region, did 320 dives and took 25,000 slides. Realm of the Pygmy Seahorse features 280 of these amazing photographs. Underwater photographers will find a wealth of information on technique. For the naturalist, the rich text explains the behaviour seen in the photos.