Late December through late April the humpback whales from the norths migrate to the tropical waters of Central America avoiding the cold winter. Late July through October the humpback whales from the southern hemisphere do the same migration. During this migration the whales give birth to its calf in the calm waters of the Coronado bay (Ballena National Park, Drake Bay, Caño Island).Whale and Dolphin Tour: Possibility of watching whales and dolphins. Time: 3-4 hours.Ballena National Park Combination Tour (the "most popular" tour): Whale and Dolphin Tour and Snorkelling. Time: 3-4 hours.