14 Questions About Aquatic Animals Answered

14 Questions About Aquatic Animals Answered

There are a variety of aquatic animals, each with its own unique adaptations for living in the water. Fish are the most common type of aquatic animal and can be found in every corner of the globe. Other popular aquatic animals include amphibians, reptiles, mammals, and invertebrates. In this article, I will be explaining 14 questions about aquatic animals and providing answers.

Sincerely, Aquatic animals have a number of adaptations that allow them to live and thrive in water. For example, fish have gills that extract oxygen from the water, while amphibians have lungs that allow them to breathe both air and water. Additionally, many aquatic animals have streamlined bodies that help them swim quickly and efficiently.

Aquatic animals play an important role in the ecosystem and are a key part of the food chain. Many animals, including humans, rely on fish as a source of food. In addition, aquatic animals help to keep the water clean and healthy by eating algae and other debris.

Whether they are swimming in the ocean or in a freshwater lake, aquatic animals are an important part of the natural world. Here are the 14 questions about aquatic animals and providing answers:

1. Which animal is both the largest living creature on Earth and the largest mammal?

The blue whale is the largest mammal that inhabits all oceans. The largest blue whale ever seen was at least 110 feet (33.5 meters) long and weighed 209 tons. The average length of a boy is around 82 feet (25 meters), but a woman’s typical length is 85 feet (26 meters).

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A blue whale may develop to a maximum adult weight of 100 to 120 tons and may weigh between 2.5 and 4 tons (2,268 and 3,628 kg) as a newborn. A whale calf drinks 50 to 150 liters of its mother’s milk each day, which results in a rise in weight of around 8 pounds (3.6 kilograms) each hour, or 200 pounds (90.7 kilograms), or its weight.

At weaning, which occurs at roughly eight months of age, the calf is around 50 feet (15.2 meters) long and weighs about 25 tons (22,679 kilograms).

Blue whales lack any teeth. Instead, they have rows of hundreds of flat, flexible, ragged-edged baleen plates, arranged in two parallel rows to resemble thick hair combs in their upper jaw. Blue whales consume krill, a tiny organism with a shrimp-like appearance.

However, scientists claim that the brains of large marine creatures like whales and dolphins are quite comparable to human brains. They have the ability to communicate, follow instructions, and adapt to various situations.

Since they have historically been hunted for their baleen and blubber (fat), blue whales are now regarded as an endangered species. Although it is still a relatively small quantity compared to what it was before whaling, the number of blue whales worldwide is thought to vary from a few thousand to tens of thousands.

2. What makes the walrus known as the “tooth walker”?

The walrus uses its two tusks—actually two long, sharp teeth—to protect itself against polar bears, fight off other walruses, and move over the ocean bottom in search of its favourite food, clams.


The “tooth walker” temporarily anchors itself to the ocean bottom by driving its tusks into the muddy sand so that it may wander in search of food. The animal walks again, retracts its tusks, and walks once more.

3. Is it true that a shark can see a drop of blood a mile away?

No. However, sharks can smell blood from a very far distance. Sharks, which are carnivores, are well known for having keen senses of smell. Sharks have two nostrils, and certain species can detect scents up to 91 meters (nearly 300 feet) away using only one of them.

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For instance, 14 percent of the brain tissue of great white sharks is devoted to odor. As they zigzag through ocean currents, sharks utilize their very keen noses to look for sources of odor and food.

Some species may be able to detect one blood molecule in over a million water molecules, or a drop of blood in 25 gallons (94 liters) of water. The “lateral line” of a shark, a row of sensors along its side, enables it to detect vibrations from approaching prey.

4. How can underwater fish breathe?

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Like all other living things, fish are also living organisms and need oxygen to survive. Fish use their gills to breathe, whereas humans use their lungs. A fish’s gills have a large number of blood vessels that take in oxygen from the water. The fish’s mouth pulls water in, and as it squirts water out through its gills, oxygen is transferred from the water to the blood vessels. Due to the fact that their gills are not designed to draw oxygen from the air, fish cannot breathe on dry land.

5. Can some fish live in the absence of water?

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Undoubtedly, for a time. For a significant portion of the year, the mangrove killifish resides in dead tree branches and trunks. The 5-centimeter (2-inch) long fish is often found in mangrove swamps in Florida, Latin America, and the Caribbean. It may be found in muddy pools and crabs’ flooded tunnels. The mangrove killifish is one kind of fish that can’t survive for a short time without water. The gills of the Southeast Asian walking catfish allow it to breathe both air and water. Huge Southeast Asian mudskippers breathe air by taking oxygen in via their skin, the back of their mouths, and their throats while swimming.

6. Can fish fly?

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Flying fish, which inhabit the warm waters of the Atlantic and Pacific Oceans, have enormous fins that may stiffen and extend to resemble wings as they lift themselves momentarily into the air. A flying fish can glide through the air for at least 30 seconds while reaching a top speed of around 40 miles per hour (64 kph) because of the quick movement and vibration of its tail fin. The fish generates speed and lengthens its “flight” by dovetailing into the water while vibrating its tail. Flying fish may be observed gliding over the water while they are trying to escape their predators, such as albacore or bluefin, or to avoid hitting a boat. About 40 distinct kinds of fish have flying characteristics. When their pools of water dry up, they temporarily alter their gills to retain water and nutrients, and they use their epidermis to discharge nitrogen waste. These alterations are reversed as soon as they enter the water again.

7. Which marine organisms are capable of generating electricity?

Some fish produce electricity to zap their prey or defend themselves. The long-bodied fish from South America known as the “electric eel” may grow up to 9 feet (2.75 meters) long and weigh around 50 pounds (22.7 kilograms). The electric eel swims through calm water looking for fish to eat. Because it breathes air, it must surface every several minutes. The tail, which is covered with electric plate organs, makes up the bulk of the electric eel’s body length.


This toothless eel uses electric shocks to paralyze its prey, maybe to protect its mouth from the spiny fish it is trying to eat. The eel uses a series of fast electrical shocks to temporarily paralyze the fish so it can be pulled into the eel’s stomach. A human might be startled by the electrical charge, which could be in the 300–600 volt range.

Unique organisms known as electric rays have two kidney-shaped organs that can both create and store energy. Big Atlantic torpedo rays have the power to shock their prey with a 220-volt jolt before devouring it. Electric rays use their electric organs to communicate with one another, shock possible prey and scare off predators. Similar to how rays do, the African electric catfish uses its 400-volt electric shock to defend itself and catch food. A kind of aquatic animal called a mormyrid uses electrical impulses as a form of radar to travel safely and find food in the very murky waters of West Africa.

8. Which species of fish puff themselves up like balloons?

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Pufferfish and porcupine fish often resemble ordinary fish. When a fish detects danger or feels threatened by another fish, it will inflate its body into a ball that may grow up to five times its normal size by ingesting water. Predators run away when they see this, and because of their increased size, larger predators find it challenging to eat them. When the fish recognizes there is no longer a danger, it gradually deflates.

9. Do salmon really always return to their birthplace?

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Yes, the salmon’s life cycle is what gives it such a recognizable name. After giving birth in little streams far from the sea, it spends the first few years of its life in freshwater. The bulk of its adult life is spent in the open ocean, where it migrates via rivers and streams in the spring, traveling lengths of up to hundreds of kilometers. When it’s time to lay its eggs, the salmon returns to its birthplace to spawn before dying. Salmon produce a significant amount of oil in their bodies since they spend their whole lives in the water. The salmon uses the oil to help give it the energy it needs to go upriver.

10. What kinds of animals reside in abandoned seashells?

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Other crabs’ exoskeletons are harder than those of hermit crabs (outer coverings). They need a refuge to protect their frail bodies from the harsh circumstances of underwater life as well as a place to hide from predators. They sneak into deserted seashells to survive. The crab’s flexibility allows it to bend and twist into a curled shell, revealing just its claws. A hermit crab will carry the shell around on its back as it moves around the ocean floor. Every time it outgrows its present one, it moves to a larger one.

11. Is coral a kind of plant or animal?

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Coral is both plant and animal. However,  Coral is made up of two different living organisms: an animal and a plant that lives within the animal. The organism’s animal component is a polyp, a small sea anemone. Each algal cell is contained inside the polyp’s cells. For the polyps, the algae must provide energy and recycle nutrients. Coral has an exterior skeleton composed of the outer skin, unlike fish and mammals, but it has an internal skeleton like most other animals. Limestone, a hard, white, chalky material that acts as the coral’s protective covering and gives the animal its characteristic shape, makes up the coral’s “exoskeleton.” The vast, intricate coral reefs that may be seen worldwide in warm water environments are made by polyps.

12. What aquatic creature carries its young in a pouch?

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The fertilized eggs of the female are housed in a pouch on the front of the male seahorse’s abdomen, which operates similarly to a female mammal’s womb. The female seahorse may only lay up to 100 eggs in the male’s pouch at a time. The eggs are fertilized by the male’s sperm which is released into the pouch. A fluid that is growing on the pouch wall covers the fertilized eggs with nutrients and oxygen. The male seahorse gives birth to live offspring that may be as tiny as 0.04 inches (1 centimeter) long, depending on the species, after the eggs hatch in two to six weeks.

13. What makes a dolphin different from a porpoise?

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At first glance, it could be challenging to tell a porpoise from a dolphin. They both belong to the same biological phylum, the Cetacea, which includes both of these fascinating carnivorous sea creatures. Despite this, the two have very minute physical differences. In general, porpoises are smaller than dolphins and lack a pronounced beak. Dolphins have teeth that are formed like cones, as opposed to the spade-shaped teeth that are present in porpoises. In contrast to porpoises, which normally have triangular dorsal fins, dolphins often have hooked or curved dorsal fins. There are around 30 kinds of true dolphins, including popular subspecies like bottlenose, spinner, and spotted dolphins.

14. Which fish creates a nursery using bubbles?

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Siamese fighting fish that are endemic to Thailand has an unusual approach to caring for their eggs. Between plant leaves, the males of the species make bubble nests. Upon reaching the water’s surface, the fish takes air in its mouth, coats it with saliva, and spits it out, creating bubbles that stick together on the water’s surface. When the eggs hatch, the male takes the female’s clutch and spits the newly formed eggs into the bubble nest. The male also keeps watching over the nest, protecting the eggs from being eaten by other fish.

Conclusively, the post has simply explained The 14 questions about aquatic animals which have now logically been answered.