Wildlife authorities say the strong earthquake off the coast of El Salvador destroyed more than 45,000 endangered sea turtle eggs .
The director of the turtle conservation program for the El Salvador Zoological Foundation says the 7.4-magnitude undersea quake sent at least three waves at least 30 feet high up the beach and destroyed thousands of nests and just-hatched turtles.
In the last year and a half the foundation has successfully hatched and released 700,000 turtles from four species at risk of extinction.
