Nautilus Closes C$27.6 Million Final Tranche of Private Placement

TIDMNUS

Nautilus Closes C$27.6 Million Final Tranche of Private Placement
FOR: NAUTILUS MINERALS INC.

TSX, AIM SYMBOL: NUS

October 6, 2011

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Oct. 6, 2011) - Nautilus Minerals Inc. (TSX:NUS)(AIM:NUS) has
received gross proceeds of C$27.6 million from the issue of the second tranche of shares forming the final part
of the private placement announced in August.

A total of 10,940,004 shares was issued today in the second tranche at the issue price of C$2.52 per share.

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.

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FOR FURTHER INFORMATION PLEASE CONTACT:

Nautilus Minerals Inc. (Toronto)
Investor Relations
+1 (416) 551 1100
investor@nautilusminerals.com

Nautilus Minerals Inc.
Joe Dowling
Vice President Investor Relations and Communications
+61 (7) 3318 5544 or Cell: +61 431 365 741
jjd@nautilusminerals.com
www.nautilusminerals.com

Numis Securities Limited
Stuart Skinner
Nominated Adviser
+ 44(0) 20 7260 1000

Numis Securities Limited
James Black
Corporate Broking
+ 44(0) 20 7260 1000

Neither the TSX nor the London Stock Exchange accepts responsibility for the adequacy or accuracy of this press
release.

Nautilus Minerals Inc.

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