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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 is the purpose for defibrillation?

Defibrillation is used to restore a normal heart rhythm in cases of life-threatening cardiac arrhythmias, such as ventricular fibrillation or ventricular tachycardia. It delivers a controlled electric shock to the heart to help it reestablish a regular heartbeat.

What event happens during the three stages of a cell's life?

During the three stages of a cell's life (interphase, mitosis, and cytokinesis), the cell grows and prepares for division in interphase, undergoes nuclear division in mitosis where the chromosomes separate and move to opposite ends of the cell, and finally, splits into two daughter cells in cytokinesis by forming a cleavage furrow to divide the cytoplasm.

A young river is characterized by oxbows true or false?

False. Oxbow lakes are formed when a meander in an older river is cut off, creating a U-shaped body of water. Young rivers typically do not have oxbow lakes as they are still actively eroding their channels and shaping their course.

How do Dolphins hide from predators?

Dolphins rely on their speed and agility to evade predators. They may also use their ability to dive deep underwater or swim in a group to confuse predators. Additionally, dolphins have a keen sense of hearing and echolocation, helping them detect threats in their environment.

How do whales and dolphins reproduce?

Whales and dolphins reproduce through sexual reproduction. Mating occurs in water, with the male fertilizing the female's eggs internally. The gestation period varies, with whales typically carrying their young for 10-18 months and dolphins for around 11-17 months.

What is the population of the baiji dolphin?

The population of the baiji dolphin, also known as the Yangtze River dolphin, is believed to be functionally extinct with possibly no individuals remaining in the wild. Human activities such as habitat destruction, overfishing, and pollution have led to their critically endangered status. Efforts to find and conserve the species have been largely unsuccessful.

When two unrelated organisms look alike sharks and dolphins?

When two unrelated organisms look alike, it is called convergent evolution. In the case of sharks and dolphins, they have evolved similar streamlined body shapes for efficient swimming in their aquatic environments, despite not being closely related. This similarity in appearance is an example of convergent evolution driven by similar environmental pressures.

What are the breasts of the whale called?

Whales have abdominal mammary slits, which conceal nipples from which a calf suckle.

What does captivity to dolphins?

Captivity is a very boring lifestyle for a dolphin. They are forced to perform tricks for food. In the wild dolphins feed on live fish, however, in captivity they are fed dead fish.

In a lot of cases dolphins have never seen shore line or the ocean floor, so being locked in a concrete tank is extremely stressful for them.

Captivity reduces a dolphins lifespan, as said by the IWC.

How are dolphins clever?

I have two answers for you. Before the past decade the answer is yes dolphins are smarter than dogs. But before the past decade research into dogs (their intellegence and behavior) was not deemed a valid school of study by most of the scientific community unlike dolphians who were studied in detail. In recent years there have been amazing discoveries about the number of things that a dog is capible of understanding. Only Humans and Dogs look into the eyes of a human and more look first at the right eye and then the left. No other animal does this, dogs don't even do it with eachother, only with humans. All other animals, even wild dogs such as wolves, look at the whole face of the animal and not directly at the eyes. Further proof of this is shown when a person makes eye contact with a dog and then looks somewhere else. Even without pointing or turning your head the dog will look the same direction and follow your gaze. No other animal does these things, not even dolphins. So to answer your question, we can't be sure without more research. Is this a sign of increased intellegence or is it a sign that dogs have evolved specifically for communication with humans? You be the judge.

As a point of reference take a look at this documentary. Dogs: Decoded it is a pbs film.

What is the difference between a seal and a dolphin?

The difference between a seal and a dolphin is a seal mainly stays in the Arctic's while dolphins stay in warm salty oceans (habitat). But in the appearance a dolphin does not have ''whiskers'' like seals do....Hope this is helpful

Hot oil room temperature oil room temperature water below room temperature oil Which is likely to have the lowest viscosity?

Room temperature water is likely to have the lowest viscosity among the options provided. Water has a lower viscosity compared to oil, especially when the temperature is below room temperature. Oil typically has a higher viscosity compared to water.

How are dolphins flippers different from human hands?

They do have the same type and amount of bones, but the overall form and function is obviously different. Our hands are used for grabbing stuff, a dolphin's flipper is used for steering in water. ^^

How does a whale or dolphin nurse?

Whales and dolphins nurse their young by producing milk in their mammary glands and nursing their calves by squirting the milk into their mouths. The young calf typically nurses by swimming alongside the mother and positioning itself to suckle from her teats.

Why do dolphins have bigger brain than humans?

Dolphins have evolved to have larger brains in relation to their body size compared to humans, mostly due to their complex social structures, communication skills, and environment. These factors have driven the development of their cognitive abilities and problem-solving skills, leading to the need for a larger brain mass.

Are vaquitas herbivores?

well its not because there is no fish that eats plants

Is a pink Amazon River dolphin a herbivore?

Pink Dolphins, like all Dolphins, are carnivores. They eat mainly fish and crustaceans.

Snails that live in the intertidal zone?

Snails that live in the intertidal zone are adapted to withstand both wet and dry conditions. They typically have a strong, thick shell to protect them from predators and desiccation during low tide. These snails often consume algae and other small organisms found in the intertidal area.

Do all mammals need lungs to breathe?

No, all mammals need lungs to breathe, as lungs are the primary organs responsible for gas exchange. Mammals have evolved to depend on lungs for respiration due to their efficient exchange of oxygen and carbon dioxide with the blood.

Symbiotic Relationship between a pink river Dolphin and acanoda?

Well, honey, a symbiotic relationship between a pink river dolphin and an anaconda is like a twisted love story in the Amazon. The dolphin gets a free spa treatment from the anaconda's skin-exfoliating massages, while the anaconda gets a personal bodyguard that wards off pesky predators. It's a match made in the wild, where beauty and the beast team up for survival.

What part of the ocean do bottle nose dolphins live in top middle or bottom?

well just think about it, dolphins are mammals, therefore, they need oxygen to breathe. dolphins can get some oxygen out of the water like whales, but there is absolutely no oxygen on the bottom, and it would take a very long time for the dolphin to get to the surface. middle.

How do galapagos dolphins adapt?

They adapt together and need to know where they are going to go first before adapting, and have to make sure that there new home is cooler water than there old home because as they are older they need cooler water to survive.

What is the smallest whale to the largest whale from smallest to largest?

The Dwarf Sperm Whale is the smallest species commonly known as a whale. It grows up to nine (9) feet in length and 551 pounds in weight- making it smaller than the bigger dolphins.

What kind of cells do dolphins have?

Cheek cells

Red Blood Cells and White Blood Cells(most of them look the same in all animals)

Tounge cells

Fat cells

Bone cells

Muscle cells

Skin cells

Neuron Cells

and many more.