1. The hammerhead shark family is a good example.

2. They include the hammerhead shark, whose fins are highly prized in China for soup, with a bowlful selling for as much as $100.

3. A hammerhead shark is fatally caught in a gill net in Mexico's Gulf of California.

4. The researchers traced finds from the scalloped hammerhead shark species—collected at the world's biggest fin market in Hong Kong—back to rare populations in the Atlantic and Indo-Pacific oceans.

5. A great hammerhead shark will reach an average of 500 lbs. at adulthood.

6. The week after, there was a millpond under a vivid blue sky - with matching hammerhead shark cruising the northern limits.

7. The most well - known sharks are the great white shark, whale shark, blue shark and hammerhead shark.

8. Researchers used a tool called "genetic stock identification" to test samples of 62 scalloped hammerhead shark fins—an endangered species—from the Hong Kong fin market.

9. In November, an international conference imposed a ban on trade in whitetip shark from the Atlantic and on the hammerhead shark.