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Dolphins and Porpoises
Considered not a fish, dolphins and porpoises belong to the group of toothed whales that have skin, not scales. The significant difference between them is that dolphins have a beak, a melon-shaped head and a dorsal, while porpoises have none.
3,460 Questions
What are the habits and adaptations of a dolphin?
Dolphins have a number of habits and adaptations which ensure they survive well in their marine environment:
- Fin shape: a dolphin's tail goes up and down to help it dive up to get air (compared to a fish's back fin which moves side to side). The shape of their fins also helps to propel them through the water.
- To help dolphins save oxygen while they dive underwater, their heart beats slower during a dive and their blood is diverted from other parts of the body to their heart, lungs, and brain.
- Dolphins also save oxygen via their muscles, which have a protein called myoglobin, which in turn stores oxygen.
- Dolphins have blubber, or fat, which provides insulation, helping the dolphin stay warm in cold water.
- Blubber also serves another function, streamlining the body for better speed in the water.
- Dolphins have a body covering of skin (not scales). The uppermost layer of the skin produces an oil which forms a film that covers the dolphin's whole body.
- Being mammals, dolphins breathe with lungs rather than gills, so they breathe from a blowhole which closes before the dolphin goes into the water, so water will not enter the blowhole.
- The long nose helps the dolphin to kill sharks.
- Dolphins have teeth, which they use to catch fish.
- Dolphins have large brains in relation to the size of their bodies, and studies show they have exceptional intelligence.
- Dolphins work together to find food, often "herding" school of small fish up onto reefs and sandbars. The dolphins then work together, taking turns to feed while the other dolphins keep the fish herded.
- Dolphins have well developed echolocation, by which they locate other animals and objects in the water. It is also how they communicate with each other.
- Dolphins have between 45 and 63 small, sharp teeth, which enable them to tear food into smaller pieces.
- Dolphins sleep with just part of their brain, so that the other part remains constantly on alert for danger.
Where pink river dolphin live?
At the mouth of the Amazon River (in FRESH water!), they frolic amidst a flooded forest. Jacques Cousteau had a T.V. special about it YEARS ago.
The pink river dolphins live in the Amazon and Orinoco Rivers
Does a dolphin have hair or fur?
Unlike most mammals, dolphins do not have hair, except for a few hairs around the tip of their rostrum which they lose shortly before or after birth. The only exception to this is the Boto river dolphin, which has persistent small hairs on the rostrum
How long does a baby toucan stay with their mother?
suck it they do not they rape each other and die do you think that they can rape each other and get away with it hells ya they can.(daaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)btw i would liove to be one
About how long is a dolphins life spand?
a dolphins life spand is about 30 years thank you thank you hold the applause please
no the killer whale is in the family of the dolphins! but that doesn't stop orcas well killer whales eating dolphins so they don't get along at all there both of them ain't the same size
How do dolphins trap there fish?
trigger fish look weird i recomend you go to google then search trigger fish and you see pitcure of a trigger fish and they look fatesh put not that fat skinny head like meduim small eyes some have dots on them they live in the ocean they have sharp teeth not like shark small that all i know i hope this helped
Why are dolphins friendly and sharks are not?
Dolphins are whats called to be social animals. Because they like humans unlike sharks. They can actually take the smell of blood and not want to eat someone or another animal. They swim with humans and are very cute cuddly animals. That's why I would prefer to be with a dolphin then a shark any day (: <333333
I LOVE DOLPHINS THEY ARE SO CUTE !
What is the difference between a sea otter and a dolphin?
River otters have much longer tails and a longer head than the sea otter. Sea otters have have large webbed hind flippers. When at the surface, river otters tend to swim on their bellies. Sea otters float on their back. River otters would be more likely to climb on a log or onshore to eat. Sea otters tend to eat their food in the water while floating on their backs, with the food on their stomach. River otters are on land frequently. Sea otters almost never leave the water. River otters tend to be all brown. Adult sea otters' heads lighten throughout their lifetime, becoming quite blond.
In addition to the above, Sea Otters often gather in large numbers called "rafts" while river otters are more solitary and are usually only seen in groups of 4 or less (mom and pups). River otters can be found in streams, rivers and coastal salt water areas.
This is in response to the answer below which is not correct.
sea otters live in the sea otters live in rivers
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Do marine biologist work with dolphins and turtles?
Yes they do. Marine biology has to do with the oceans inhabitants and dolphins and turtles are part of the oceans.
No, Tuna are too big for dolphins to eat, indeed Dolphins and Tuna frequently share the same prey, the dolphins coral bait fish into a bait ball which is then preyed upon by a number of large marine predators.
Large Sea Aminals Related to the Dolphin?
The largest mammal in the dolphin family is actually the Orca whale (also known as the killer whale).
Nothing different, the sea is static the whole year and they go on following food where ever it goes.
No. However, a Dolphin's front flippers contain some of the same bones that exist in a human hand.
What is the name of a large saltwater pond for keeping porpoises?
This question was asked in the Daily Telegraph General Knowledge Crossword No 844, orinted in the Weekly Telegraph Thursday 22nd January 2009. The following week the answer was given as SEAQUARIUM
Humpback whales don't eat Dolphins. Humpback whales can't eat Dolphins. Humpback whales are filter feeders. They don't have the teeth to take a dolphin apart, and can't swallow anything that big.
Do dolphins sleep upside down?
Easiest answer, no humans can't sleep upside down for extended periods of time. Hanging upside down can cause blood clots, especially in the brain. We are designed as upright, bi-pedal animals. Gravity plays a significant role in blood being pumped to our extremities. Also gravity helps remove the blood from the brain and return it to the heart. A person can go for extended periods of time in low or zero gravity, however they are specially trained, and wear special g-suits. The effects of near zero gravity have not been studied in depth. However what we do know is that extended times in near zero gravity can cause very serious problems,including but not limited to, muscle wasting, circulation problems, blood clots, and cardiovascular problems. Several people have tried stunts involving hanging upside down for extended periods but they were examined by doctors every hour, while standing up!
Dolphin is derived from the the Greek word for dolphin, dolphis, which was derived from the Greek word for womb, delphus. The animals name can then be translated as meaning "a 'fish' with a womb." Of course, we are talking about a marine mammal and not a fish.
What is the difference between a seahorse and a dolphin?
A seahorse is a small aquatic creature that has a tail which curls in spiral. One interesting trait of the species is that it is the male who carries the babies. A dolphin is a mammal, much larger, that is between gray and blue color. They have been known to kill sharks!
The oldest bottlenose dolphin currently is 59yr old Nellie from marineland florida, the average dolphins can live to about 25-30yrs they can weight up to 6-700lbs
The maximum age for bottlenose dolphins is between 40 and 50 years. The average age a dolphin can get (the life expectancy) can be calculated from the ASR Annual Survival Rate (the percentage of animals alive at a certain point, that is still alive one year later). For the dolphin population in Sarasota Bay, the ASR has been measured to be about 0.961. This yields a life expectancy of about 25 years. For the population in the Indian/Banana River area, the ASR is between 0.908 and 0.931. This yields a life expectance between 10.3 and 14 years. So the actual life expectancy differs per region. [3]
You feed dolphins fish by pooping out the fish from eating it and the doplins eat that
