All but four of the 123 dolphins that washed up on Texas beaches were dead.  The few that turned up alive, died a short time later, said Blair Mase, the southeast marine mammal stranding network coordinator for NOAA Fisheries.  Officials called this an "unusual mortality event."  The deaths occurred from November through March 2012, a four-month timeframe, although this number is usually a year's mortality rate. 

The Texas coast was plagued with a toxic algae bloom called "red tide" last year...
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