Nautilus Minerals Inc. (TSX:NUS) (OTC:NUSMF) (Nasdaq Intl Designation) (the "Company" or "Nautilus") announces that the Company has received a loan from Deep Sea Mining Finance Ltd. (the "Lender") in the principal amount of US$1.3 million under the previously announced loan agreement (the "Loan Agreement") between the Company, two of its subsidiaries and the Lender which provides for a secured structured credit facility of up to US$34 million.

Consistent with previous bridge loans provided by the Lender, pursuant to the Loan Agreement the Company has issued to the Lender an additional 5,584,192 warrants of the Company in connection with the US$1.3 million loan. Each such warrant entitles the Lender to purchase one common share of the Company at a price of C$0.22 for a period of five years from the date of issuance of the warrant.

To date the Company has issued a total of 53,908,932 share purchase warrants to the Lender in connection with loans totaling US$12,550,000. Pursuant to the Loan Agreement, share purchase warrants are issued on the basis of one warrant for each US$0.2328 of principal amount of loan advanced.

The Company may draw loans under the Loan Agreement on a monthly basis, which shall bear interest at 8% per annum, payable bi-annually in arrears. Advances of loans are subject to, among other things, the Lender's ongoing review and approval of the Company's monthly operational budget. All loans have a maturity date of January 8, 2019 (being one year after the date that the first bridge loan was made). The Company will be entitled to pre-pay, in whole but not in part, the loans at any time prior to maturity, by paying 108% of the outstanding principal of the loans plus accrued and unpaid interest.

The loans are being provided to fund the Company's working capital requirements and enable the Company to continue the advancement of the Solwara 1 Project while the Company seeks, with the assistance of its financial advisors, the remaining project financing of up to approximately US$350 million required to complete the development of the Solwara 1 Project.

As previously disclosed, the Lender is a private company owned 50% by each of: (i) USM Finance Ltd., a wholly owned subsidiary of USM Holdings Ltd, an affiliate of Metalloinvest Holding (Cyprus) Limited; and (ii) Mawarid Offshore Mining Ltd., a wholly-owned subsidiary of MB Holding Company LLC. As the Lender is indirectly controlled by two insiders of the Company, the Lender is a "related party" of the Company and the loan transaction constitutes a "related party transaction" of the Company under MI 61-101 Protection of Minority Security Holders in Special Transactions ("MI 61-101"). The transactions comprising the loans and the share purchase warrants are exempt from the formal valuation and minority shareholder approval requirements of MI 61-101.

The Company did not file a material change report more than 21 days before the expected closing of this transaction, as the details of the transaction were not finalized until immediately prior to the closing and the Company wished to close the transaction as soon as practicable for sound business reasons.

Annual General Meeting (AGM)

As previously disclosed, the Company plans to hold its annual general meeting on June 25, 2018, at the offices of its Canadian legal counsel DuMoulin Black LLP in Vancouver, British Columbia. At the AGM, in addition to routine annual business, the Company will be seeking disinterested shareholder approvals of: (i) the issuance of the maximum number of share purchase warrants to the Lender under the Loan Agreement in connection with loans of up to US$34 million; and (ii) an exercise price of C$0.17 per share in respect of all such warrants (including the warrants issued with the most recent loan of US$1.3 million referred to above), all as required by the rules of the Toronto Stock Exchange.

Further details of the AGM are provided in the notice of meeting and information circular delivered or made available to shareholders on May 16, 2018, and which can be obtained under the Company's profile at www.sedar.com.

For more information please refer to www.nautilusminerals.com or contact:

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

The TSX does not accept responsibility for the adequacy or accuracy of this press release.

Certain of the statements made in this news release may contain forward-looking information within the meaning of applicable securities laws, including statements with respect to the Company's funding requirements, expectations to receive additional loans under the Loan Agreement, and the continued development of the Solwara 1 Project. We have made numerous assumptions about such statements, including  assumptions  relating  to  the Company’s funding requirements, project funding, and completion  and  operation  of  the  Company's  seafloor  production  system. Even  though  our  management  believes  the  assumptions  made and  the expectations represented by such statements are reasonable, there can be no assurance that they will prove to be accurate. Forward-looking  information  by  its  nature  involves  known  and  unknown  risks,  uncertainties  and  other  factors which may cause the actual results to be materially different from any future results expressed or implied by such forward-looking  information.  Please  refer  to  our  most  recently  filed  Annual  Information  Form  in  respect  of  material assumptions and risks related to the prospects of extracting minerals from the seafloor and other risks relating  to  the  Company's  business  and  plans  for  development  of  the  Solwara  1  Project.  Risks related to continuing the Company's operations and advancing the development of the Solwara 1 Project include the risk that the Company will be unable to obtain at all or on acceptable terms, and within the timeframes required, the remaining financings necessary to fund completion of the build, testing and deployment of the Company's seafloor production system; that the Company will be unable to satisfy the conditions to receiving additional loans under the Loan Agreement; that the Company will be unable to rectify or arrange for the rectification of the default under the shipbuilding contract for the construction of the production support vessel; and that agreements with third party contractors for building slots within certain timeframes are not secured as required. As  the  Company  has  not  completed  a prefeasibility study or feasibility study  in  respect  of  the  Solwara  1  Project,  there  can  be  no  assurance that the Company's production plans will, if fully funded and implemented, successfully demonstrate that seafloor resource production is commercially viable. Except as required by law, we do not expect to update forward-looking  statements  and  information  as  conditions  change  and  you  are  referred  to  the  full  discussion  of  the  Company's  business  contained  in  the  Company's  reports  filed  with  the  securities  regulatory  authorities  in  Canada.

About Nautilus Minerals Inc.

Nautilus is the first company to explore the ocean floor for polymetallic seafloor massive sulphide deposits. Nautilus was granted the first mining lease for such deposits at the prospect known as Solwara 1, in the territorial waters of Papua New Guinea, where it is aiming to produce copper, gold and silver. The Company has also been granted its environmental permit for this site. Nautilus also holds highly prospective exploration acreage in the western Pacific (granted and under application), as well as in international waters in the Central Pacific. A Canadian registered company, Nautilus is listed on the TSX:NUS stock exchange and is also a member of the Nasdaq International Designation program. Its corporate office is in Brisbane, Australia. Its major shareholders include MB Holding Company LLC, an Oman based group with interests in mining, oil & gas, which holds a 30.4% interest and Metalloinvest, the largest iron ore producer in Europe and the CIS, which has a 19.2% holding (each on a non-diluted basis, excluding loan shares outstanding under the Company’s share loan plan).