Whales and dolphins have a special adaptation that allow them to explore the ocean's depths. Beaked whales can spend two hours beneath the surface. Dolphins descend down to 1,000 feet and routinely make as many as 20 dives in a row to 300 feet. Good luck finding that type of profile on a dive table. … Continue reading Interesting Article | How Do Deep-Diving Cetaceans Avoid DCS?