World Science Scholars
2.2 The Threat to Our Oceans
  • We’re taking 100,000,000 tons of fish out of the ocean each year, compared to 20 million tons in the 1950s.
  • There has been a 90% decline in fish populations since the 1950s, most from the 1970s on.
  • Large shark populations have declined by approximately 90% in the last 50 years.
  • As the use of fossil fuels reduced whaling for fuel, we have found greater economic value in keeping whales alive.
  • It may be too late to save the tuna – only 4% remain.

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