Instant Index: Dolphins Enjoy the Splendor of Southern California

George Stephanopoulos reveals the top stories that have people buzzing this week.
1:35 | 06/18/13

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Transcript for Instant Index: Dolphins Enjoy the Splendor of Southern California
Our "instant index" begins tonight with two breathtaking images off the pacific coast. This picture going viral today, a dolphin leaping through a watery hugh la hoop. And this video from the same stretch of ocean. A sam paid of dolphins, a mega pod. It turns out southern california has the greatest concentration of dolphins on ert, more than florida, alaska and hawaii combined. What a fair well for a principle in massachusetts, roger retiring after 36 years thought he was making a video about the school. Watch what happened in the parking lot behind him. This can't be. This cannot be. That's right. A flash mob and the sign says it all. Thank you for believing in us. These kids -- when people ask me what I'm going to miss, i think I know what it is. But he did add that kids will do anything to get out of class. Speaking of flash mobs, it made the oxford english dictionary today along with the word tweet, defining it as to make a posting on the social networking service twitter. That's in addition to the other tweet, the canary kind. They added live flog and mani-pedi. If it feels like oxford is late, this is warp speed. Normally a ward has to be used for ken years. They said, quote, seems to be watching on. Coming up you're about to

This transcript has been automatically generated and may not be 100% accurate.

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