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SeaWorld plunges 31% on lower revenue outlook

Shares in SeaWorld Entertainment plunged Wednesday after the theme park operator reported lower revenue and slashed its sales outlook for the year.

SeaWorld shares fell more than 31 percent in early afternoon trading. (What's the stock doing now? Click here)

SeaWorld said attendance for the quarter rose 0.3 percent, but revenue fell slightly. Adjusted earnings also dipped slightly.

The company said it now expects 2014 revenue to fall 6 to 7 percent. Its previous guidance had assumed a slight increase in revenue, according to a Dow Jones report.

The company has been under significant pressure since the release of the documentary "Blackfish," which criticized the way SeaWorld treats its animals. The company has strongly rejected the documentary's claims.

—By CNBC