Helix Energy Solutions (HLX) 10-Q 2010 Q3 Quarterly report

EXHIBIT 99.1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Shareholders of

Helix Energy Solutions Group, Inc.

We have reviewed the condensed consolidated balance sheet of Helix Energy Solutions Group, Inc. and subsidiaries as of September 30, 2010, and the related condensed consolidated statements of operations for the three-month and nine-month periods ended September 30, 2010 and 2009, and the condensed consolidated statements of cash flows for the nine-month periods ended September 30, 2010 and 2009. These financial statements are the responsibility of the Company’s management.

We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board, the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the condensed consolidated financial statements referred to above for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet of Helix Energy Solutions Group, Inc. and subsidiaries as of December 31, 2009, and the related consolidated statements of operations, shareholders’ equity, and cash flows for the year then ended, not presented herein, and in our report dated February 26, 2010, we expressed an unqualified opinion on those consolidated financial statements and included an explanatory paragraph for the adoption of a new accounting standard related to non-controlling interests and new oil and gas reserve estimation and disclosure requirements. In our opinion, the information set forth in the accompanying condensed consolidated balance sheet as of December 31, 2009, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.

 /s/ ERNST & YOUNG LLP

Houston, Texas

October 28, 2010