<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2010-03-09</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000764065</issuerCik>
        <issuerName>CLIFFS NATURAL RESOURCES INC.</issuerName>
        <issuerTradingSymbol>CLF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001486545</rptOwnerCik>
            <rptOwnerName>BLAKE DAVID B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 SUPERIOR AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1500</rptOwnerStreet2>
            <rptOwnerCity>CLEVELAND</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44114</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Oper. N. Amer. Iron Ore</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9124</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>382</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>VNQDC</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The total represents shares earned as Performance Shares (3,759 shares) and Restricted Stock Units (5,365 Units) granted and/or awarded to the the Reporting Person from the Cleveland-Cliffs Inc 1992 Incentive Equity Plan or the 2007 Incentive Equity Plan (as Amended and Restated December 31, 2008).</footnote>
        <footnote id="F2">The amount represents an exchange of all or a portion of the Reporting Person's cash bonus for Cliffs Natural Resources Inc. (Company) Common Shares on a deferred basis (Bonus Exchange and Match Shares) under the Company's 2005 Voluntary Nonqualified Deferred Compensation Plan (VNQDC).</footnote>
        <footnote id="F3">Held for the benefit of the Reporting Person by the Company's VNQDC.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Traci L. Forrester by
Power of Attorney</signatureName>
        <signatureDate>2010-03-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
