Module 02 · Biology

The Great Filter Feeders

The baleen whales are the largest animals ever to have lived. Meet five of them, and the elegant, improbable machinery that lets them survive on the smallest creatures in the sea.

6 lessons ~40 min total

Lessons in this module

Work through them in order, or start wherever your curiosity takes you.

1

The blue whale

Bigger than any dinosaur, yet powered by tiny krill. How does the blue whale survive as the ultimate giant of the oceans?

6 minAudio
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2

The humpback whale

Humpback whales regularly breach their 30-ton bodies out of the water in spectacular aerial displays. Nobody yet knows exactly why they do it.

7 minAudio
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3

Right whales

The name “right whale” came from whalers, who deemed it the “right” whale to hunt due to its characteristics of slow swimming, nearshore occurrence and its rich stores of oil and baleen. We are about to see it is so much more than this.

7 minAudio
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4

Gray whales

Gray whales love to breach and frequently do it on their long migrations. One gray whale even breached 40 times in a row! An impressive feat for a 36-ton whale!

7 min
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5

The bowhead whale

Bowhead whales are perhaps the longest-living mammals in the world, with some whales having swum these oceans for 200 years. How they live this long remains a mystery.

8 min
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6

Filter feeding

Baleen arrived about 30 million years ago and has proven to be one of the most remarkable adaptations in mammals. It has created the largest animals to ever live on Earth.

5 min
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Ready to begin? Start with the first lesson.

Start module 2