Giant, 1,000-pound bull shark takes researchers by surprise
The high-testosterone bull sharks go after bigger prey than smaller sharks thanks to their serrated teeth.
| Solar X-rays: Geomagnetic Field: |
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| Solar X-rays: Geomagnetic Field: |
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Giant, 1,000-pound bull shark takes researchers by surprise
The high-testosterone bull sharks go after bigger prey than smaller sharks thanks to their serrated teeth.