The Minahassans centered on the provincial capital of Manado, have a long history of trade with the outside world. The Sangir-Talaud islands to the north of the mainland form a natural bridge to the Philippines, traces of whose culture can be found in both language and religion. It was the Dutch, however, that had the most influential effect on the development of the area. Apart from introducing a strong political and religious structure, they also raise coconuts and nutmeg. Magnificent coral gardens, multitude of tropical marine reserve and Arakan Wawantulap marine reserve, offer some of the best diving and snorkeling to be had anywhere in the world. A tremendous variety of marine-life thrives in these rich waters from sponges and coral to turtles and dolphins. Northern Sulawesi is the combination of amazing sights and the underwater sensation.