*Top 26* Amazing Dolphin Facts!
Dolphins are one of the smartest and most loved – animals in the world! Social creatures, they live in pods and even babysit for each other.
The 38 Marine Dolphin Species include Bottlenose, Common, Atlantic Spotted, and believe it or not – Orca (Killer Whale).
Read on to learn more Dolphin Facts!
1) Dolphins are Mammals
Even though Dolphins spend their entire life in water, they are mammals – not fish. More specifically, they are “marine mammals.”
Dolphins have all of the characteristics of mammals. (Warm blooded, give birth to live young and nurse them, have lungs that breathe air, and a complex brain).
Unlike fish – who breathe through gills – Dolphins breathe air using lungs. Therefore, they have to make frequent trips to the surface of the water to take a breath.
Another characteristic of a mammal is to have hair or fur. At first glance, Dolphins don’t have this. However, at birth dolphin calves have a mustache of short hair around their snout that enables them to locate their mother for nursing. The hair falls out after several weeks.
2) There are 38 Marine Dolphin Species
While there are only 5 River dolphin species, there are 38 marine dolphin species. This includes Bottlenose, Common, Atlantic Spotted, Irrawaddy, Orca (Killer Whale), and Risso’s Dolphin.
Short beaked Common Dolphins are the most abundant. They live in every ocean, except for those that are ice covered. Maui’s Dolphins are the most endangered. Sadly, there are only 50 left.
Bottlenose Dolphins are the most easily recognizable. Their mouth is curved so it looks like they are smiling.
3) Most Dolphins are Grey and White
Most Marine Dolphins are darker on the top side of their body. Like most things in nature, this is a result of natural selection. Because when seen from above, the grey skin on a dolphin’s back hides it from predators.
In contrast, when seen from below the white underside of a dolphin helps it blend in with the sky.
Check out my Why Do Dolphins Strand Themselves: Unraveling the Mystery blog!
4) Dolphins live to 20-36 Years Old
In the wild, most dolphins live to 20-24 years old. In contrast, in captivity most live to 35-40.
Amazingly, the oldest dolphin in captivity was a 61-year old Bottlenose named Nellie. She lived at Marineland Dolphin Adventure in St Augustine, Florida and passed away on April 30, 2014.
Equally incredible, the oldest known dolphin in the wild was Bottlenose dolphin named Nicklo. Researchers last saw her in 2017 at 67 years old and presume she is dead.
5) Dolphins Breathe out of Blowholes
Just like whales and porpoises, dolphins have a single blowhole on top of their head that they use to breathe. When they surface the blowhole opens so they can breathe in air. When they go back under water the hole closes to keep water out of their lungs.
As a side note, the average dolphin species can stay underwater for 8-10 minutes.
6) Dolphins have 80-100 Cone Shape Teeth
Dolphins use their conical shaped teeth to capture fast-moving prey. However, they prefer to swallow fish whole rather than chew them. They are able to do that because they do not have a gag reflex.
Dolphins eat fish, squid, and shrimp. They eat fish head first so that the scales don’t irritate their throat. Most spectators probably don’t realize it, but when dolphin trainers toss fish to dolphins they toss them head first.
7) Dolphins are Carnivores
Dolphins are carnivores, meaning they only eat meat. Their diet mainly consists of fish, squid, shrimp, crabs, and octopus.
Different dolphin species eat different prey depending on where they live. For example, Bottlenose dolphins often eat herring and mackerel, while Orcas hunt much larger animals including seals and sharks.
Dolphins swallow their food whole rather than chewing it. Their cone-shaped teeth are designed to grab slippery prey quickly and efficiently.
Check out my What Do Dolphins Eat: Do Dolphins Drink Water? Discover Now blog!
8) Every Dolphin has a unique Dorsal Fin
A dorsal fin is an appendage on a dolphin’s back that helps them balance in water. Each one is unique, similar to a human fingerprint.
A dolphin’s dorsal fin helps it warm up or cool off. (Similarly, both seals and sea turtles stick a flipper out of the water to warm up).
Dolphins also have flippers and a tail that propels it through the water as it jumps and dives.
Check out my How Long Do Dolphins Live: Uncover the Surprising Lifespan blog!
9) Dolphins Communicate with each other
Like most animals, dolphins emit sounds to make their companions aware of food or danger. They squeak, grunt, whistle, and click. Sometimes they put the sounds together in a complex way.
Each dolphin has a signature whistle. When they want to communicate, first they whistle, then they “speak”, and then they whistle again. This ensures that every dolphin in the pod knows who is speaking!
Dolphins also speak to each other through body language. This includes bumping heads, touching fins, blowing bubbles, and clapping their jaws.
10) Dolphins have excellent Eyesight
Dolphins have excellent vison both in and out of water. They have eyes on each side of their head, which gives them 300 degree panoramic vision. Incredibly, dolphins can use one eye to look at you and the other eye to look at something else!
However, dolphins see a limited number of colors. Scientists believe they can only see shades of grey and the blue-green spectrum.
In addition, dolphins have blurry vision under water. And most importantly, dolphins rely on echolocation – not eyesight – for navigation and prey detection.
Check out my Whale and Dolphin Conservation blog!
11) Dolphins “hear” under water using Echolocation
Dolphins have Echolocation, which lets them know the size and distance of objects around them. Consider it nature’s sonar system. First the dolphin makes a clicking sound. Then they wait for it to bounce back or echo. They decode the information in a part of their brain called the Melon.
Since dolphins have Echolocation, when they are swimming in the wake of a boat they always know exactly where the boat is. In contrast, whales do not have Echolocation. Even if they hear the boat coming, they do not know exactly where it is located. Sadly, they frequently get struck by boats.
12) Dolphins live in Groups called Pods
Dolphins are social animals that live in pods. They swim together, protect each other, and hunt for food as a team. Some dolphins form lifelong friendships. Pod members help sick or dying dolphins as much as they can.
Most pods consist of 2-30 dolphins. However, if there is a lot of food available, they form super pods consisting of 100-2,000 members!
13) Female Dolphins are Pregnant for 11-13 months
When a female dolphin gets pregnant, she joins a Maternity Pod which consists of female and baby dolphins. Calves are born underwater. They come out tail first, so that they don’t drown before they can surface and take their first breath.
The dolphin’s size at birth depends on the species. For example, Bottlenose dolphins weigh 20-30 pounds at birth and are 2-3 feet long.
14) Baby Dolphins (Calves) nurse for 2 years
Baby dolphins are called calves. They swim in the middle of the pod, so the adults can protect them from predators such as killer whales and sharks. Incredibly, females babysit calves that are not theirs while its mother is off hunting!
Calves stay with their mothers for 3-6 years while learning how to hunt, avoid danger, and navigate their territory.
In addition, adult dolphins help calves save energy by swimming slightly above them. (Their wake propels the calves). This explains why there are so many pictures of mothers swimming right next to their babies.
15) Dolphins Sleep with One Eye Open
Dolphins never fully shut down their brains to sleep. Instead, they rest one hemisphere of their brain at a time while keeping the other half alert. This allows them to keep breathing and watch for predators while still getting needed rest.
When one eye is closed, the opposite side of the brain is “asleep.” After a few hours, they switch sides.
Check out my How Long Can a Dolphin Survive Out of Water: Unveiling the Truth blog!
16) Dolphins Can Swim Up to 25 Miles Per Hour
Bottlenose dolphins usually cruise around 3-7 mph. But when they are motivated – hunting, playing, or riding waves – they can sprint up to 20-25 mph.
This burst of speed makes them one of the fastest marine mammals in the ocean.
17) Dolphins Have Super Healing Powers
Dolphins can survive serious injuries that would be fatal to many other animals, including shark bites. Their bodies have special compounds that act as natural antibiotics, preventing infections even in open wounds. Scientists believe Dolphins can release natural chemicals in their bodies to dull pain.
Even more amazing, dolphins can regrow lost tissue with little or no scarring. It’s one of their most mysterious survival abilities.
18) Dolphins Help Each Other When Injured
Dolphins display remarkable empathy. Pods have been observed supporting sick or injured members by lifting them to the surface so they can breathe.
They will even protect injured dolphins from predators until they recover.
Want to learn more about Beluga Whales? Check out my Top 29 Amazing Beluga Whale Facts blog!
19) Dolphins Can Jump 15 Feet Out of the Water
Dolphins are acrobats of the sea. They are powerful swimmers and can launch themselves up to 15 feet into the air! They jump to gain distance, show dominance, to attract mates and for fun. It’s a breathtaking sight for anyone lucky enough to see it.
20) Dolphins Can Recognize Numbers and Patterns
Experiments show dolphins can understand numerical concepts. They can distinguish between “more” and “less” and even recognize simple math-like sequences. This puts them among the most intelligent animals, alongside primates and some birds.
21) Dolphins Make and Use Tools
Certain dolphins in Australia have learned to use sponges to cover their snouts while foraging on rocky seafloors, protecting themselves as they hunt.
22) Dolphins are Federally Protected by the Marine Mammal Protection Act
The 1972 Marine Mammal Protection Act makes it illegal to harass, feed, hunt, capture or kill any marine mammal in U.S. waters. Therefore, it is illegal to follow, chase, feed, hunt, or swim with wild dolphins.
I have written a guide on how wildlife protection works around the world that explains why these boundaries and rules are so vital for conservation.
23) Dolphins are in the Whale family
Even though most people think of Whales and Dolphins as separate, they actually belong to the same group, Cetaceans. Dolphins are small toothed Whales.
This means dolphins share the same ancestry as the largest Whales, but evolved to be smaller, faster, and highly social hunters.
24) Orcas (“Killer Whales”) are Dolphins
There are 6 species of dolphins that most people think are whales. This includes Killer Whales and Pilot Whales.
Killer Whales are the largest member of the dolphin family. They are black and white and can reach 30 feet long. AS the name suggests, they are carnivores. They eat fish, seals, dolphins, sharks, rays, whales, octopus and squid. But not humans!
25) There are 5 Species of River Dolphins
They are the Amazon River Dolphin, Araguaian River Dolphin, Ganges and Indus River Dolphin, Yangtze River Dolphin, and La Plata Dolphin. Even though the La Plata Dolphin is a river dolphin, they live in the coastal waters of southeastern South America.
Fun Fact – Amazon River Dolphins are known as “pink dolphins.” They are born grey, but turn pink when they get older.
26) Porpoises are not Dolphins
Since porpoises and dolphins look a lot alike, many people confuse them. However, they are completely different species.
One way to tell them apart is that dolphins’ snouts are longer. And dolphins have cone shaped teeth, while porpoises have flat teeth.
Final Thoughts
From their playful jumps to their incredible intelligence, dolphins never cease to amaze. These social, clever mammals remind us just how complex and connected life in the ocean truly is.
If you enjoyed these dolphin facts, share this post with a friend who loves marine life.
