Super packs of dolphins
Sometimes in the waters off the southwest coast of Atauro Island, you can see huge "super packs" of dolphins congregating in the same place. Quite typical is the simultaneous accumulation of several species in this area, which is presumably due to the high density of nutrients and food in the water.
This highly productive area is where the Ombay Strait intersects with the Vetar Strait. Located within the so-called "Indonesian Throughflow," the largest water movement on the planet, this area connects two very large water basins: the Banda Sea and the Savu Sea. The narrow and very deep straits produce enormous concentrations of nutrients and food for marine animals.
Among the dolphin species that are found in these waters are: short-finned grinde, bottlenose dolphin, long-beaked, bottlenose, large-toothed and gray dolphin.