Nautilus closes C$27.6 million final tranche of private placement

The shares formed part of a total capital raising of C$98.1 million, before expenses, involving the issue of approximately 39 million shares. The first tranche of approximately 28 million shares was issued on September 8, 2011.

Application has been made to the AIM Market of the London Stock Exchange for the second tranche of shares to be admitted to trading on October 7, 2011. The shares also will be listed for trading on the Toronto Stock Exchange.

Further details of the private placement are available on the Nautilus website: http://www.nautilusminerals.com/s/Media-NewsReleases.asp?ReportID=476612

About Nautilus Minerals Inc.

Nautilus is the first company to explore the ocean floor for polymetallic seafloor massive sulphide deposits and is developing its first project at Solwara 1, in the territorial waters of Papua New Guinea, where it is aiming to produce gold, copper and silver. The company has been granted all necessary environmental and mining permits.

Nautilus also holds approximately 600,000 square kilometers of highly prospective exploration acreage in the western Pacific, in PNG, the Solomon Islands, Fiji, Vanuatu and Tonga, as well as in international waters in the eastern Pacific.

A Canadian registered company, Nautilus is listed on the TSX and AIM stock exchanges and has its corporate office in Brisbane, Australia. Its major shareholders include Metalloinvest, the largest commercial iron ore producer in Europe and the CIS, which has a 21% holding, and global mining group Anglo American, which holds an 11% interest.