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SEASIDE, Ore. -- Tourists visiting Seaside were getting quite a sight - and smell - this week.

Millions of anchovies have died trying to swim up the Necanicum River at Seaside. They come in with the incoming tide, get stranded and die.

Most float back into the ocean, while others are eaten by birds.

But the massive amount that remained this week was quite a sight.

There were too many fish and too little oxygen in the small stream, according to Oregon Coast Aquarium spokeswoman Tiffany Boothe. She added that anchovy die-offs aren't unusual, although this one did seem to have especially big numbers.

It's going to smell for a couple of days probably, she said.

Experts said this odd phenomenon happens about every 10 years in the Seaside area.

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