Thirty dolphins have died so far this year in Florida's Indian River Lagoon, and the number of dead manatees is also growing. Officials from Hubbs SeaWorld Research Institute, state fish and wildlife biologists and other experts are joining forces to find the cause. So far, scientists haven't identified a common link between the deaths other than that the dolphins are very thin. Marine biologist Megan Stolen says even if the cause is identified, officials may not be able to prevent the deaths.

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