The most common dolphins, the bottlenose dolphins, can stay submerged for a maximum of 20 minutes. However, this is a rare occasion as they usually come up to breathe every 2-3 minutes.
Although dolphins swim in water, they can’t breathe underwater like fish because they don’t have gills. Instead, they rely on lungs to breathe air, just like humans.
How Do Dolphins Keep Air In Their Lungs?
Dolphins, despite having lungs like humans, can hold their breath for long durations. They achieve this by saving oxygen more effectively than people.
When dolphins dive, they focus on delivering oxygen to the brain and heart while reducing their heart rate to conserve blood. Some tissues in their bodies can store oxygen temporarily.
How Do Dolphins Breathe?
Dolphins live in water and breathe through their blowholes, not their mouths. They’ve evolved to have separate holes for breathing and eating, aiding their survival. The blowhole on a dolphin’s head closes during dives and opens when they surface to expel stale air and water.
Can Dolphins Drown?
Dolphins have evolved greatly, but they still can’t stay underwater for long without surfacing for air. If they remain submerged too long, they’ll drown. Additionally, ocean pollution and fishing gear pose a severe risk of suffocation. Therefore, it’s crucial to remove any blockages in their migratory path quickly.
