
Chapter 1
The map of the oceans
Chapter 2
Navigation in the dark
Chapter 3
Hazards on the highway
Chapter 4
Humans and the giants
YOUR GOAL
Master of The great whale highways
Ch 4 · Humans and the giants

torito Modern marine biologists use satellite tags and AI to map migration routes in real-time.

torito Industrial whaling in the 19th and 20th centuries pushed many migrating species to the brink of extinction.

BETA
torito Dodge predators and pollution to learn how whales survive their epic migrations.
Fun Fact
Unique tail prints: A humpback whale's tail fluke has a pattern of scars and pigmentation as unique as a human fingerprint.
Glossary
ventral grooves (noun)
These are the long, accordion-like folds of skin running from a whale's chin to its belly that stretch to hold huge amounts of water and food. They work just like a giant expandable grocery bag, helping the whale swallow tons of krill-filled water in a single, massive gulp.
These are the long, accordion-like folds of skin running from a whale's chin to its belly that stretch to hold huge amounts of water and food. They work just like a giant expandable grocery bag, helping the whale swallow tons of krill-filled water in a single, massive gulp.
Quiz
Which whale species has shown a remarkable population recovery since the 1986 whaling ban?
Quiz
Approximately how many whales were killed by commercial whaling during the 20th century?
Quiz
Which indigenous group in New Zealand holds deep ancestral ties to migrating whales?