Bull & Lifshitz, LLP announces an investigation into possible breaches of fiduciary duty in connection with the proposed merger of Mariner Energy, Inc. (NYSE: ME) (referred to as "Mariner" or the “Company”) and Apache Corporation (NYSE: APA) (referred to as “Apache”) in a transaction with a total value of approximately $2.7 billion.

Under the terms of the agreement, which has been approved unanimously by the Boards of Directors of both companies, Mariner shareholders will receive $7.80 in cash and 0.17043 shares of Apache stock for each share of Mariner that they own.

Bull & Lifshitz, LLP's investigation is focused on whether the proposed deal provides adequate value to the Company’s shareholders.

If you are a holder of Mariner stock and want to discuss your legal rights, you may e-mail or call Bull & Lifshitz, LLP who will, without obligation or cost to you, attempt to answer your questions.

If you are a shareholder of Mariner and would like more information about our investigation, please contact Peter D. Bull, Esq. by telephone at (866) 313-6222 or by sending an e-mail including your contact information to: counsel@nyclasslaw.com. All e-mail correspondence should make reference to Mariner.

Bull & Lifshitz, LLP is a New York City-based law firm with significant experience representing investors in merger-related shareholder class actions, shareholder derivative actions, and securities fraud class actions. For more information about the firm, please visit our website at www.nyclasslaw.com.

ATTORNEY ADVERTISING. © 2010 Bull & Lifshitz, LLP. The law firm responsible for this advertisement is Bull & Lifshitz, LLP, 18 East 41 st Street, New York, New York 10017, (212) 213-6222. Prior results do not guarantee or predict a similar outcome with respect to any future matter .

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