June 6, 2008HAMILTON, BERMUDA–(Marketwire – June 5, 2008) – Teekay Offshore Partners L.P. (Teekay Offshore or the Partnership) (NYSE:TOO) announced today that it has agreed to acquire an additional 25 percent of Teekay Offshore Operating L.P. (OPCO) from Teekay Corporation (Teekay) for a purchase price of $205 million. Upon the completion of the acquisition, Teekay Offshore will own 51 percent of OPCO, including all general partner interests, and Teekay will own the remaining 49 percent of OPCO, which it may choose to sell to the Partnership in the future. The Partnership also announced today that OPCO has agreed to acquire from Teekay two 2008-built Aframax lightering tankers, specially designed to be used in ship-to-ship oil transfer operations, for total cost of $106 million, including the assumption of $90 million of existing debt relating to the vessels. These tankers are currently employed on 10-year, fixed-rate, bareboat charters to Teekay’s 50 percent-owned joint venture company, Skaugen PetroTrans (with options exercisable by the charterer to extend up to an additional five years). The Board of Directors of the Partnership’s general partner and its conflicts committee approved both transactions. The conflicts committee retained outside legal and financial advisors to assist it in evaluating the transactions. In approving the transactions, the committee obtained the views of its financial advisor as to the fairness of the purchase prices. The Partnership expects to finance these transactions through a combination of existing cash balances, borrowings under OPCO’s revolving credit facilities and the issuance of additional equity, potentially including an issuance of equity to Teekay. Both transactions, which are subject to standard closing conditions and financing, are expected to be completed during June 2008. “As a result of these acquisitions, management anticipates recommending to the Board of Directors of the Partnership’s general partner an increase in the quarterly cash distribution rate in the range of 12 to 15 percent over the current annualized distribution of $1.60 per unit,” stated Peter Evensen, Chief Executive Officer of Teekay Offshore GP LLC, the Partnership’s general partner. “High oil prices continue to stimulate the offshore industry, and Teekay Offshore is uniquely positioned to grow in this market. We will strive to continue to make further accretive acquisitions.” About Teekay Offshore Partners L.P. Teekay Offshore Partners L.P., a publicly-traded master limited partnership formed by Teekay Corporation (NYSE:TK), is an international provider of marine transportation and storage services to the offshore oil industry. Teekay Offshore Partners currently owns a 26 percent interest in and controls Teekay Offshore Operating L.P., a Marshall Islands limited partnership with a fleet of 36 shuttle tankers (including 11 chartered-in vessels), four floating storage and offtake units (FSO), and nine conventional crude oil Aframax tankers. In addition, Teekay Offshore Partners L.P. has direct ownership interests in two shuttle tankers and one FSO. Teekay Offshore Partners also has rights to participate in certain floating production, storage and offloading (FPSO) opportunities. Teekay Offshore Partners’ common units trade on the New York Stock Exchange under the symbol “TOO”. FORWARD LOOKING STATEMENTS This release contains forward-looking statements within the meaning of U.S. federal securities laws, which reflect management’s current views with respect to certain future events and performance, including statements regarding: the anticipated increase in the Partnership’s cash distribution rate; the closing and financing of the Partnership’s acquisition of 25 percent of OPCO and OPCO’s acquisition of the two Aframax tankers; the potential for Teekay to offer to Teekay Offshore additional limited partner interests in OPCO; and Teekay Offshore’s growth and making further accretive acquisitions. The following factors are among those that could cause actual results to differ materially from the forward-looking statements, which involve risks and uncertainties, and that should be considered in evaluating any such statement: the failure to generate sufficient cash for distribution; unforeseen operational difficulties, such as unanticipated drydockings or accidents; changes in production of offshore oil, either generally or in particular regions; changes in trading patterns significantly affecting overall vessel tonnage requirements; changes in applicable industry laws and regulations; the potential for early termination of long-term contracts and inability of the Partnership or OPCO to renew or replace long-term contracts; the failure of Teekay to offer additional interests in OPCO to Teekay Offshore; required approvals by the board of directors of Teekay Offshore’s general partner of any cash distribution by the Partnership, including any increase in the quarterly rate of such distributions; required approvals by the board of directors of Teekay and Teekay Offshore’s general partner, as well as the conflicts committee of Teekay Offshore to acquire additional interests in OPCO; the Partnership’s ability to finance, and the cost of financing the purchase of additional vessels and/or interests in OPCO; changes to the amount or proportion of revenues, expenses, or debt service costs denominated in foreign currencies; and other factors discussed in Teekay Offshore’s filings from time to time with the SEC, including its Report on Form 20-F for the fiscal year ended December 31, 2007 and its Report on Form 6-K for the quarter ended March 31, 2008. The Partnership expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the Partnership’s expectations with respect thereto or any change in events, conditions or circumstances on which any such statement is based.