seaworld orca "data-mce-source =" Mike Blake / Reuters "data-mce-caption =" Trainers invite Orcas orcs to perform in front of an audience during a performance at SeaWorld Animal Park in San Diego, CA. March 19, 2014.Mike Blake / Reuters

Shares of SeaWorld Entertainment reported Tuesday their biggest drop one day of the year after the announcement of the resignation of its CEO from its CEO after only seven months.

Outgoing CEO, Gustavo Antorcha, said that he was leaving "due to disagreements over the board's involvement in the company's decision-making," according to the SeaWorld filing with the SEC. SeaWorld shares plummeted by 7% on news.

"Although I may have a difference in approach, I still believe in SeaWorld's strategy, mission, team and outlook," said Antorcha in a company statement.

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Chief Financial Officer Marc Swanson will be appointed interim CEO, while Chief Accountant Elizabeth Castro Gulacsy will replace the position of Interim Chief Financial Officer, the document says.

SeaWorld has struggled to keep its employees among its highest ranks. Since 2014, the company has served with six CEOs, some on an acting basis and others on a permanent basis.

A 2013 documentary detailing his treatment of killer whales in captivity hovers over the Marine Park business for several years. Revenues have been steadily decreasing each year since 2013.

SeaWorld shares have increased by more than 30% since the beginning of the year.

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