So blue whales and fin whales produce very low- frequency sounds that can travel over very long ranges. So blue whales and fin whales produce very low-frequency sounds that can travel over very long ranges..Hunted by whalers, the blue whale became nearly extinct by the 1960’s and today is classified as a critically endangered species.Here's a blue whale call at 50 miles, which was distant for the humpback.Now after I play back these humpback calls, I'll play blue whale calls, but they have to be sped up because they're so low in frequency that you wouldn't be able to hear it otherwise.The longest blue whale on record was a 108-foot [33 m] adult female caught in Antarctica?But, why are blue whales so big?Virtually gone is the blue whale, the largest creature ever to inhabit the Earth.Calculations show that the largest a lunge feeder can grow is 33 meters, pretty much blue whale size.!The blue whale has an average weight of 120 tons —as much as 30 elephants!?How large is the blue whale, and what conclusion should we naturally reach after contemplating Jehovah’s animal creations?My fellow plankton came in all sizes, from tiny algae and bacteria to animals longer than a blue whale.Baby blue whales, for instance, spend almost a full year inside their mother.Coming closer to here, the Costa Rica Dome is a recently discovered area -- potentially year-round habitat for blue whales.Thật khó tin là những sinh vật tí hon đó lại cho phép cá voi xanh đạt tới giới hạn về kích thước trên hành tinh của chúng ta.It's incredible that these tiny creatures have allowed blue whales to really push the limits of size on our planet.TAll living things on the earth —including microbes, grass, elephants, blue whales, and humans— reproduce using DNA.But, now maybe you're wondering why blue whales aren't any bigger?.For example, scientists have been able to differentiate the elusive blue whale's populations worldwide based on their songs..In Sri Lanka, if you go down to the south coast of Sri Lanka, during the northeast monsoon season, you can see blue whales very, very easily..In many ways, the sheer size of krill seems to have driven the evolution of the blue whale.

Whale is an aquatic mammals which lives in the salt water. Whale is sexual dimorphism, which means the males are larger than the females, and sometimes they can look slightly different from the other. Whale has streamlined body with two limbs which are modified into flippers which can help it to swim at the speed up to 50km/h. It has conical sharp teeth to catch small but fast - moving prey. The hearing ability of whale has been developed so that they can both hear on air and underwater. Therefore, if one whale is blind, it can still hunt base on the sound of its prey. Since whale can dive to a very deep level of water, it has a layer of fat under it’s skin to stay warm. Whale is a very intelligent animal which can even understand orders from human. Due to that reason, whale is usually captured to perform at the zoo to entertain people. Whale is a beautiful creature, and we should protect instead of using it as a tool.