Whales

no, without sharks the entire marine ecosystem would fall apart. they clean up all the dead stuff and keep numbers of species at a level so that they wont be overpopulated. they only bite people because they don't know what we are and don't have hands to pick us up and look at us.

There are several answering services that also have this question or similar ones on it. From answerbag.com, the question asked was: what is upthrust?

The answers were:

* Upthrust is the upward force exerted on an object in a fluid. It arises as a result of the difference in pressure exerted by the fluid on the surface of the object at different depth. * Up thrust is the force that pushes objects up and makes them seem to loose weight in a fluid (note - a fluid means a liquid or gas) When you are standing on the ground gravity keeps you down but upthrust stops you from falling into the earths core. In a way upthrust makes things hard!! Because if it didn't exist solids wouldn't be solid.An objects density effects how it floats. * Density = Mass * ------- * Volume * Upthrust is also called buoyancy. It is the upward force produced on an object in a fluid (such as air or water). The force is equal to the weight of the fluid displaced by the object. If that weight is greater than the weight of the object, the object will float in the fluid. If it is equal, it will sit suspended. If it is less, it will sink, but the object will weigh less than it would in a vacuum. Hence, it is easier to pick up a heavy object in water than in air - the amount of displaced water weighs more than the equivalent volume of air, therefore water produces a greater upthrust.

In wiki answers the question asked was:

= What does upthrust mean? = The answer was: Upthrust is a type of force that pushes upwards

A blue whale is bigger than a brachiosaurus. Blue whales are the largest animals known to have existed on Earth, with adult blue whales growing up to 100 feet (30 meters) long and weighing as much as 200 tons. In contrast, the largest-known brachiosaurus species were estimated to be around 70 feet (21 meters) long and weighed about 50 tons.

People often think all sharks are bad due to misconceptions perpetuated by media portrayals of sharks as aggressive man-eaters. In reality, most shark species are not a threat to humans and play essential roles in marine ecosystems. Promoting education and awareness about sharks can help dispel these negative stereotypes.

No one really knows. However, we do know that gestation periods are based on weight. So according to me calculations based on knowledge regarding the bone density of large mammals I estimate the whales gestation period to be approximately 18.6675 months.

Onward,

~Ricárdo

If blue whales were to become extinct, it would disrupt marine ecosystems by affecting the food chain, as they are apex predators. Their extinction could lead to an overpopulation of certain marine species and a decline in biodiversity. Additionally, the loss of blue whales would have cultural and economic impacts, as they are a popular species for whale watching and tourism.

No, grey whales do not hibernate. They travel long distances between feeding and breeding grounds each year and are active throughout this migration. Grey whales do, however, fast during the breeding and calving season.

Blue Whales are the largest known living animal species on earth. Animals that were as large as 27 meters in length (nearly 90 feet) and weighing over 170 tonnes have been recorded. Since these animals were measured and weighed after they were cut up into manageable pieces, the actual size and weight could be even more

"Friend of Namu". The first orca at SeaWorld was one named Namu. When he died, it was decided that from then on the orcas would be called "Shamu" in loving memory of Namu.

There have been multiple killer whales that have been named Shamu, and they have been both male and female. The original Shamu was a female orca, while some of the others have been male.

Toothed whales produce sound by sending out clicks through their forehead region, which is aided by a fatty structure called the melon. The melon helps focus and direct the sound waves. The sound waves bounce off objects in the water and return to the whale's lower jaw, which conducts the sound to the middle ear through specialized tissues and bones. This allows the whale to interpret the echoes and navigate its surroundings.

False. Trilobites are not related to dolphins, whales, and seals. Trilobites were marine arthropods that lived around 300-500 million years ago, while dolphins, whales, and seals are mammals that evolved much later in the evolutionary timeline.

Whales play a critical role in the marine ecosystem as they help regulate the populations of their prey, such as krill, fish, and squid. Their massive bodies also store large amounts of carbon, which helps mitigate climate change. In addition, whales are important for tourism and inspire awe and wonder in people around the world.

i guess they show tht whales were here millions of years ago and they show how they changed over time, when the whales changed or evovled, the fossils changed

they show that whales' ancestors were four legged mammals. modern whales inherited hip bones from their four legged ancestors.

Yes, whales can drown. Despite being marine mammals, they still need to breathe air, so if they are unable to reach the surface to breathe, they can drown. This can happen if a whale is entangled in fishing gear or stranded on land.

Structural: Streamlined for swimming, blowhole on the dorsal side for ease in breathing, elongated tail (flippers are actually fused hind limbs) for extra power/force in swimming, grooved throat (gullet) for increased volume of seawater for straining

Physiological: whales have high concentrations of myoglobin in their blood (holds more oxygen than hemoglobin)= this makes it easier for whales to stay down longer; myoglobin also compresses easier to combat the high pressures of the deep sea, whales have thick layers of blubber to insulate them from the cold depths of the sea (cold oceans in general), rather than teeth, blues have baleen plates (keratin filters for krill) used for straining metric tons of krill (and other small marine life) out of the ocean

behavioral: blues use their tongue to push seawater out through baleen plates after their mouths are closed (for filtering), blues always feed in the highest populations of krill (since krill move, this means blues move, following the migrations of krill with currents); females are often larger and will hover over calves to protect their young (pods of blues will keep calves centrally with larger adults on the peripheral edges.

It is difficult to determine the exact number of whales in the South Pole due to the vast and remote nature of the region. However, there are various species of whales, including humpback, minke, and blue whales, that are known to inhabit the waters around the South Pole. Conservation efforts are in place to protect these whale populations and their habitats.

Cetology is the branch of zoology that specializes in the study of cetaceans, which are marine mammals like whales, dolphins, and porpoises. It involves researching their biology, behavior, ecology, and conservation to better understand and protect these fascinating creatures.

Carnivores generally eat herbivores, but can eat omnivores, and occasionally other carnivores. Animals that eat other animals, like carnivores and omnivores are important to any ecosystem, because they keep other species from getting overpopulated.

EXAMPLES OF CARNIVORES: Fox, tiger, lion, wolf, dog, and Eagles

HERBIVORES: A herbivore is an animal that gets its energy from eating plants, and only plants. Omnivores can also eat parts of plants, but generally only the fruits and vegetables produced by fruit-bearing plants. Many herbivores have special digestive systems that let them digest all kinds of plants, including grasses.

EXAMPLES OF HERBIVORES: Moose, deer, cattle, sheep, rabbit and antelope.

OMNIVORES: An omnivore is a kind of animal that eats either other animals or plants. Some omnivores will hunt and eat their food, like carnivores, eating herbivores and other omnivores. Some others are scavengers and will eat dead matter. Many will eat eggs from other animals.

EXAMPLES OF OMNIVORES: Bear, raccoon, chicken and human.

Blue tangs start as eggs that hatch into larvae, which eventually develop into juvenile fish. As they grow, they transition into adults and can reproduce. Blue tangs can live up to 10-20 years in the wild.

In September 2021, a young minke whale was found in the River Thames in London. The whale sadly died despite rescue efforts to return it to the sea.

The word "dude" first came into use during the Old West. Cowboys used the term to mean an Easterner who came out West and wore very fancy clothes. This was not meant as a compliment. A dude was considered pretty useless. Nowadays, the word can refer to anyone, but usually does mean a man.

Baby whales are called calves. Just like baby cows, but way bigger and way cooler. So next time you see a cute little whale, you can say "aww, look at that adorable calf!"