wunder beta🦈 Topic
Sharks Courses
The best free Sharks courses — fact-checked, beautifully illustrated, with quizzes. Pick one and start right now. Browse 9 free, fact-checked courses — each with narration, real images and a knowledge check.
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Why Sharks Lose Teeth
Follow the conveyor belt of replacement teeth that keeps a shark feeding and leaves a rich fossil record behind.
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Western Australia: Ancient Ground, Living Stone
Read Western Australia through ancient Pilbara rocks, iron-rich ridges, salt basins, concentrated settlement and living stromatolites at Shark Bay.
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Sharks: 400 million years of design
Trace how ancient shark lineages reshaped jaws, teeth, skin, senses, fins, and life cycles across 400 million years of evolution.
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How do sharks smell blood from far away?
Water-sampling nares track patchy chemical plumes; movie-range blood myths fail real dilution.
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Ocean Food Chains
Follow the sun's energy from tiny sea plants all the way up to the hungry shark, and see how every ocean animal is a link in the chain.
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Ocean Food Chains and Predator Loss
Discover why removing top ocean predators like sharks can ripple down entire food webs in a trophic cascade.
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Ocean Animals and Their Adaptations
From streamlined sharks to glowing anglerfish, discover the clever body features and tricks that help ocean animals swim, breathe, hide, and hunt in the sea.
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Sharks
The biology, evolution, and conservation of Earth's ancient cartilaginous predators.
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Sharks
Dive in and discover the amazing sharks that have ruled the oceans for ages!
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