Exhibit 32.1

CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350

(Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)

In connection with the Annual Report on Form 10-K of Cal Dive International, Inc. (the “Company”) for the period ending December 31, 2009 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Quinn J. Hébert, as Chief Executive Officer of the Company, and Bruce P. Koch, as Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

(1)

The Report fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934; and  

(2)

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.  

Dated:   February 25, 2010

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

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