Instead of teeth, blue whales have bristles called baleen, which look a little bit like a comb and catch food like a net. About the length of 3 double decker buses! Now that you know more about blue whales, try out some of these fun activities: Learn about more endangered animals here. Why. The pins can be connected with yarn to show the route. Another reason could be because the weightlessness of the water supports their bodies and lets them maintain such big proportions. credit by exam that is accepted by over 1,500 colleges and universities. A clever new study shows that blue whales lean on their memory to guide their epic migrations.
Most of the year, they are found in deep waters near the Arctic and Antarctic regions, where there is a large amount of krill. Nature’s schedule is becoming more erratic, and once-reliable timings are fluctuating beyond their normal variations. Grade Level: K-12 .
For example some species of baleen whale such as the humpback whale are very solitary and spend much of their lives alone which makes them much less social than other groups of Cetacea such as the killer whale (the largest of the dolphin species) which often travels in groups or pods of up to 30 or more. Many females give birth in the warm waters of the southernmost leg of their journey, but research has not yet delivered a clear picture of the larger trends in blue whale reproduction. The pandemic has devastated small businesses. Next, play several blue whale sound bites. Images can be found on the Internet or students can draw their own large blue whale, Several images cut out with their weight written on the top (see table), Google: blue whale acoustics, blue whale songs or blue whale sounds to get a handful of blue whale songs, Google: blue whale dialects for background information on specific whale dialects. Rather than finding where their prey currently is, they go after the places where their prey was in years past. They will also at times swim deep below the surface of the water at a slow pace where it can be difficult to observe them. See discussion questions for topics associated with the migration. What other animals migrate? Do you think they migrate for the same reasons as blue whales? Their existence depends on finding dense enough swarms of krill to swallow half a million calories in every mouthful.
What will it take for them to recover?
TheAtlantic.com Copyright (c) 2020 by The Atlantic Monthly Group. They each have huge heads that are broad, long and have a unique U-shaped arch, and can reach up to a quarter of their body lengths in size. Blue whales are the largest species on the planet.
Blue whale hearts weigh as much a car and their tongues as much as a whole elephant! Tell students they will run to the other end of the class and find the number of objects it takes to reach approximately 340,000 pounds. Various forms of body language can include breaching the water, spyhopping, lunging and slapping their flukes and tails against the water to communicate a variety of things such as nearby danger, a desire to play, to alert the group of nearby food and to challenge one another during mating season. Where did you travel to find whales? Next, ask them how they think blue whales communicate. This activity allows younger students to see how long a blue whale is in comparison with objects they are already familiar with. Divide the class into two teams and line up each team on one side of the room. Whales are considered conscious breathers meaning they never fall completely asleep because if they did it’s likely they would drown. What do blue whales eat? So what happens in a world where memory might lead them astray?
Break students into three groups and assign each group a migration path (white, light brown, or dark brown).
Why do you think blue whales migrate to northern latitudes during the summer? Between the 17th and 20th centuries, humans hunted whales for oil which could be made into products. In addition, blue whale migration and communication provide teachers with a strong topic to build on things like mapping and science. pictures of buses, airplanes, etc.). See the table for size comparisons/ideas, or have students brainstorm objects they'd like to use. These tiny animals are called krill, which look like very small shrimp and are around 1-2cm long.
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