1. Tropical and Subtropical Waters:
- Bottlenose Dolphins (Tursiops truncatus): These dolphins live in warm coastal waters and estuaries, such as the Gulf of Mexico and the Indian Ocean. The water temperature in these regions can range from around 68°F (20°C) in winter to 86°F (30°C) in summer.
2. Temperate Waters:
- Common Dolphins (Delphinus delphis): Common dolphins are found in temperate and subtropical oceans around the world. The water temperatures in these regions can vary significantly, from around 45°F (7°C) in winter to 77°F (25°C) in summer.
3. Arctic and Antarctic Waters:
- Beluga Whales (Delphinapterus leucas): Beluga whales are adapted to live in cold Arctic and sub-Arctic waters. They are found in regions like the Beaufort Sea, where water temperatures can drop below freezing (-1.8°C or 28.8°F).
- Orcas (Orcinus orca): Orcas have a wide range and are found in both cold and warm oceans, including the Arctic, Antarctic, and tropical regions. They can tolerate a significant range of water temperatures.
It's worth mentioning that dolphins also migrate and move to different habitats throughout the year, seeking optimal temperatures and food sources. This means that some species may encounter changes in water temperature as they travel.