According to National Geographic, blue whales feed on tiny, shrimp-like organisms called krill. A blue whale can consume up to 4 tons of krill each day.Know More
In order to eat these tiny organisms, blue whales have a row of pleated plates, called baleen, attached to their upper jaws. When feeding, a blue whale swims into a large group of krill and opens its mouth, taking in a large amount of water. With its tongue, the whale forces the water out of its mouth, through the baleen plates, which act like a sieve, catching the krill. Blue whales spend the summer months feeding in cold, polar waters, and they travel great distances toward the Equator when winter approaches.
According to National Geographic, blue whales are the largest animals on Earth, able to reach lengths of up to 100 feet and weigh more than 200 tons. Its heart alone weighs as much as a car. Blue whale calves are born weighing 3 tons and, consuming only their mothers' milk, gain about 200 pounds each day during their first year. The average lifespan for a blue whale is 80 to 90 years. It is estimated that between 10,000 and 25,000 blue whales are still living in the wild as of 2014.Learn more about Zoology
Arkive describes the African savannah as a vast grassland ecosystem with consistently warm temperatures, making it an ideal habitat for a wide variety of animals. African food chains vary slightly depending on location, but Arkive explains that each one consists of herbivores, carnivores, scavengers, decomposers and producers.Full Answer >
Hyenas are apex predators that sit at the top of the food chain. They prey upon a number of herbivores, including gazelles, impalas, wildebeests and zebras. Few animals are capable of catching and killing healthy adult hyenas but lions, leopards, hunting dogs and other hyenas occasionally eat sick and young hyenas.Full Answer >
Insects appear on the highest levelof the food chain: they classify as primary or secondary decomposers, depending on the species, and help to break down organic material such as wood, leaves and plants. Insects consume dead and decaying matter, essentially recycling remains back into the Earth, and serve as food for many other animals on the food chain too. They follow consumers on the food chain, which in turn derive energy from producers such as plants and fungi.Full Answer >
Beavers are primary consumers, pure herbivores that eat parts of hardwood trees including their leaves, bark and the softer tissue beneath the bark. They also consume all parts of aquatic plants in their environment. They are preyed upon by wolves, bears, wolverines, red foxes, lynx and otters.Full Answer >