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- When humans take a breath, they replace only 15% of the air in their lungs with fresh air. When dolphins take a breath, they replace 90% of the air in their lungs with fresh air.
- Dusky and spinner dolphins can leap 20 feet (6.1 m) or higher in the air. In fact, spinner dolphins get their name from spinning and somersaulting above the waves.
- Scientists believe that dolphins don’t ever fall into a deep sleep; therefore, they probably don’t dream.
- Called “re-entrants,” dolphins once lived on land and looked and behaved something like a small wolf but with five hoof-like toes on each foot instead claws.
- Dolphin Profile
- Interesting Dolphin Facts
- Dolphin Fact-File Summary
The dolphinis a small to medium-sized marine mammal, which are found all over the world, generally in warmer waters. They usually inhabit shallow seas and continental shelves. They are members of the order Cetacea, of which there are four families, the oceanic dolphins (Delphinidae), Indian river dolphins (Platanistidae), the new world river dolphi...
1. Dolphins are closely related to whales.
The dolphin is part of the group of mammals called cetaceans. They are divided into two distinct groups – baleen whales, and toothed whales. Baleen whales include the larger variety of filter feeding whales (the blue whale, humpback whale, and sei whaleamong others). Toothed whales include pilot whales, sperm, belugaand many others. Dolphins belong to the toothed whale group.
2. Dolphins evolved from land mammals.
The Cetaceans adapted from land to water with streamlined body shape, blowholes, a layer of blubber to provide insulation and flippers. 1
3. Dolphins communicate with clicks and whistles.
This helps them navigate, warn of potential predators and hunt for fish together.
Scientific Classification
1. “From Land to Water: the Origin of Whales, Dolphins, and Porpoises” (2009), via Evolution: Education & Outreach. 2. “Dolphins ‘call each other by name” (2013), via BBC News. 3. “Bats and Dolphins Evolved Echolocation in Same Way” (2013), via Science Mag. 4. “Armed and dangerous – Flipper the firing dolphin let loose by Katrina” (2005), via The Guardian. 5. “Dolphins form life raft to help dying friend” (2013), via New Scientist. 6. “Nellies Legacy”, via Marineland.net. 7. “Dolphins often s...
- All oceans, seas and many rivers.
- Worldwide, although they avoid polar zones
- 30-60 Years
- 5-31 ft (1.5 to 9.5 m)
1. Dolphins evolved from a four-legged terrestrial animal that started spending more time in the water around 50 million years ago; 2. The name "dolphin" comes from the Greek words "delphis" and "delphus," meaning "fish with a womb"; 3. There are around 40 different species of dolphins swimming in the oceans of the world; 4.
- Ancient dolphins had four legs. About 50 million years ago, dolphins looked very different from the animals the world knows today. Cetaceans, a group of marine species including whales and dolphins, once had four legs and hooves.
- Some people say dolphins saved them from shark attacks. News outlets such as The Guardian have reported on cases wherein a swimmer claimed that dolphins protected them from being attacked by a shark.
- Dolphins can swim fast, but not for long. According to the World Wildlife Fund, dolphins can reach a top speed of 30 mph. They can only sustain this speed for a short time, though.
- They sleep with one eye open. Don’t panic if you ever see a dolphin sleeping with one eye open. During unihemispheric sleep, dolphins rest one side of their brain at a time and keep one eye open to watch for potential dangers.
- Dolphin Facts Infographics.
- Dolphins are mammals. Yes, just like humans, the dolphins can’t breathe underwater, they need to swim up to the surface of the ocean from time to time and inhale oxygen.
- Dolphins breathe through their blowhole. Their blowhole has a muscular flap that covers it when they are underwater and also keeps the water out of their lungs.
- Dolphins don't sleep, they take naps. Dolphins are mammals, but how do they sleep without drowning? The dolphins are cautious not to fall asleep, instead, they take short naps throughout the day.
5 Interesting Facts About Dolphins. 1. Dolphins are extremely intelligent, like humans. Popularly called the “brainiacs” of the water, dolphins and whales are renowned for their extraordinary intelligence.
Mar 17, 2021 · Despite what many think, dolphins are not an endangered species. The brain of a dolphin is bigger than the brain of a monkey. A dolphin has 100 teeth in total. The largest dolphin in the world is known by the name Boto. Dolphins have the capacity to eat around 30 pounds of fish in a single day.
