10 Fascinating Facts About Atlantic Bottlenose Dolphins

A young child stands at an aquarium window, touching the glass and watching four dolphins swim by in clear blue water.

September 28, 2017

Atlantic bottlenose dolphins are named “bottlenose” after their short, stubby rostrums, or beaks. Dolphins use tools such as sponges to protect their rostrum (beak) while foraging on the bottom of the ocean.
Dolphins can make up to 1,000 clicking noises per second. These sounds travel underwater until they encounter objects, then bounce back to their dolphin senders, revealing details like the location, shape, and size of their target.
Adults eat about 5% of their body weight per DAY.
Because they consciously breathe, dolphins have to shut down one hemisphere of their brains in order to stay alive while sleeping. While resting, the other half of the brain monitors what’s going in the environment and controls breathing functions.
Dolphins swallow their food whole, and their stomach has three chambers, which aids their digestion.
Dolphins don’t make any noises with their mouth – they don’t even have vocal cords. All sounds come through the dolphin’s blowhole!
Atlantic bottlenose dolphins have between 80 -100 conical teeth.
On average, an Atlantic bottlenose dolphin will be 8.5 feet long and 400-500 pounds.
As they are mammals, dolphins are actually born with hair. A baby dolphin (calf) is born with whiskers on its upper jaw (rostrum) that fall out soon after birth.
An Atlantic bottlenose dolphin can, on average, hold its breath for 5 – 7 minutes.