Sharks are the largest and sharp predators that live all around the oceans. They have been dwelling in the ocean for more than 2 million years. There are 465 different species of sharks that live in the oceans. The biggest species of the sharks is called great white shark. A fully grown shark sits on the top of the ocean’s food chain. They have very few predators to avoid, which are others sharks and orca whales.
What Do They Look Like?
Great white shark is the biggest of all the other sharks. They grow about 20 feet in length and can weigh as much as 4000 pounds. Their underbellies are light colored and their top is dark colored. This color difference gives them an excellent camouflage. When sharks are seen from above, their dark color blends with the dark floor of the ocean. When seen from below their light color blends with the sky. Great white sharks are equipped with 3 fins, which are dorsal fin, pectoral fins, and caudal fins.
Sharks are carnivore fishes; they eat other fishes for their diet. Sharks are very good hunters. They have a sense of smell that can detect a drop of blood from miles away. They have very sharp triangular shapes teeth arranged in 7 rows. A fully grown shark mostly eats sea lions, seals, and other sea mammals. They don’t have a tongue for tasting. Instead, their whole mouth can taste the food. Sharks can lose a couple of teeth in hunting a prey. But, the new teeth are grown very fast.
Sharks prefer to live in cold waters in the oceans. They are mostly found close to the shores where the ocean water is cold. They are commonly live down to a depth of 2000 meters. However, they can go beyond this depth.
Great white sharks are considered as endangered species around some parts of oceans. Their population has reduced due to over-hunting.
- Sharks need a constant water flow over their gills to extract oxygen for respiration. They need to constantly move with their mouth open. Even, they need to move in the ocean during sleep otherwise, they may drown.
- Bull shark has the ability to live in both fresh water and ocean.
- A great white shark grows about 50,000 teeth in its life time. They lose a couple of teeth in every hunt and regrow them.
Scorpions are considered as insects but actually, they are not. They have 8 legs and are different from insects. They are most famous for their deadly poison in their stinger. Scorpions have been living on the Earth for millions of years. They have changed very little as compared to ancient scorpions. There are about 1700 living species of scorpions, and only 25 of them have the deadly poison in their stinger that can kill a human.
What do they look like?
Scorpions look similar to lobsters. They have 8 legs, 2 pincers, and a larger stinger at their back. They have a wide variety of colors including yellow, black, brown, green, and blue. Their color depends on the location of their habitat, which gives them a good camouflage.
The size of scorpions is changed from species to species. The smallest scorpion can grow about 0.5 inches in length and the largest can grow about 8 inches. Scorpions have a strong exoskeleton which gives them strength in a fight with its prey.
Scorpions prefer to eat insects and some small rodents that are easily available in their habitat. They have a pair of pincers in front which help them to fight and hold the prey. Once the prey is grabbed, they usually paralyze it with their sting. Each species of the scorpion has a poison that is effective for only selected creatures.
Scorpions are one of the creatures that are found across the world. They are found in deserts, forests, swamps, and mountains. They usually live in the small holes to avoid being spotted by their predators.
Majority of the scorpions are not endangered. However, there are some species of scorpions whose population is small and are rarely found e.g. emperor scorpion. These rare species are protected under the law.
- A scorpion can live about 6 years in the wild. However, some species are reported to live more than that.
- Scorpion’s eyesight is weak. They mostly rely on their excellent touch and smell sense.
- Mother scorpions carry their baby scorpions on their back until they learn how to survive.
You would have seen many birds in your lifetime, e.g. sparrow, crow, and a parrot. The ostrich is also the bird like them, but larger than all the birds found on the Earth. Ostriches can’t fly despite having wings. They are mostly known for their speed; they can reach a speed of 40 miles/hour (40 km/h). At such high speed, they use their wings to balance themselves during jumps and turns. They lay eggs that have the weight of about 3 pounds which makes them largest egg than any other bird.
What Do They Look Like?
Ostriches are tallest birds reaching a height of about 9 feet and weigh as much as 135 kg (300 pounds). Their body is covered with feathers, males have black feathers and females have grayish colored feathers. They have a long neck, two long and slim legs, and a long beak. Ostriches have two eyes, each having a 2-inch diameter which is larger than every land animal. An ostrich can kick forcefully enough that, it can kill a human or a lion.
Ostriches can eat a wide variety of food in its diet. They can eat grass, seeds, fruits, small insects, and lizards. They even eat pebbles for helping their digestive system. Ostriches can live without drinking water for several days.
Ostrich eating herbs
Ostriches are found in the Africa. They mostly prefer open lands, but they are also found in desert areas of Sahara. Also, People around the world domesticate the ostriches for meat.
Ostriches are placed in the least concern category, but their number has also decreased. Since ostriches are domesticated around the world, which helps to maintain their population.
- It is the famous belief that ostriches bury their heads in the sands when they have fear of danger. But, in reality, they lay their heads on grounds to avoid being spotted by predators.
- Ostriches can run for hours while maintaining its speed to 30 miles per hours (48 km/h).
- They make their nests on the ground. The size of their nest can reach 3 meters in width.
Mallard is a common duck, which is very famous bird around the world. They especially known for their sound “quack”. You have probably seen ducks is Disney cartoons, in which the duck is shown as a funny character. Mallard are loved by people around the world. Many people domesticate the ducks in their farms.
What do they look like?
Mallards have brownish colored body. The males have green color head with a ring of white color on their neck. The females are smaller in size and have white and brown color. A mallard can grow about 2 feet in length and can weigh as much as 2.5 pounds.
Mallards can eat both plants and animals, so they are called omnivores. They mostly eat seeds, human crops, fish eggs, and small fishes. They can easily catch the small fish in the water, because they are excellent swimmers.
Mallard is a common duck, which is found in Asia, Europe, Africa, and United States. They prefer to live near ponds, lakes, and rivers. These birds also migrate in some areas when temperature of the area changes. They usually live to together in flocks, called as “sords”.
Mallard duck swimming with its chicks.
Mallard is not an endangered species, but their population is decreasing. Their population in the wild in affected by human activities. But, they are also domesticated across the world. So, the risk of being endangered species is less.
- Not every species of ducks sound as “quack”.
- The quacking sound is made by females to call their babies.
- Many cartoons series characterize ducks as full yellow colored birds. But, it is not true.
- Mallard spends larger amount of time in water.
Grasshoppers are the insects which are famous for their long jumps and making a chirping sound. They have adapted themselves very well for their survival. They have an excellent camouflage, that can blend them almost completely in the surroundings of their habitats. There are about 11,000 different species of grasshoppers that are living around the world.
What do they look like?
Grasshoppers have a long body with six legs. Their back legs are large which help them to jump very high. Their body is divided into 3 parts; a head, a thorax, and an abdomen. They have a strong exoskeleton which protects their soft body. They have a pair of large wings at their back and a pair of smaller wings on the front. Grasshoppers have a wide range of colors that change from species to species.
Grasshoppers can eat both plants and small insects. It depends on their location what they will eat. Grasshoppers are very good hunters, their camouflage helps them a lot to succeed in the hunt. Many species of grasshoppers love to eat human-produced crops, e.g. wheat. They cause serious damage to the crops and sometimes eating all the crops.
Grasshoppers are one of the insects that are found all across the world. They are found in forests, grasslands, swamps, deserts, and mountains.
Grasshoppers population is stable. They are not endangered.
- In many countries, people eat some species of grasshoppers.
- They can jump 20 times as high as their body length.
- Locusts are the species of grasshopper that cause 1.5 billion dollars of damage in the US alone by destroying crops.
- Some species of grasshopper make singing noise by rubbing their back leg with one of the hard front wings.