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| iStockphoto/Chris Dascher |
| Tiger sharks are among those in peril. |
Many shark species are in peril of extinction.
In the Northwest Atlantic, all recorded shark species, with only one exception, have declined by more than 50% since 1988.
In addition, there has been:
- An 89% decline in hammerhead sharks in the Northwest Atlantic since 1988.
- An 80% decline in thresher sharks in the Northwest Atlantic since 1988.
- A 79% decline in great white sharks in the Northwest Atlantic since 1988.
- A 65% decline in tiger sharks in the Northwest Atlantic since 1986.
- A 60% decline in blue sharks in the Northwest Atlantic since 1988.
- A 99% decline in oceanic white tip sharks in the Gulf of Mexico since the 1950s.
- A 90% decline in oceanic silky sharks in the Gulf of Mexico since the 1950s.
- A 60% decline in relative abundance of all sharks in Costa Rican waters in the last 10 years.
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