-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 I8WPtPolJY59qpy0+98Jucvivwjv0Niwehz03lvG32TzrLhnRx1CTpPHmddH3433
 6sW04Bsij6/AvwAp3WCFeQ==

<SEC-DOCUMENT>0001209191-06-054948.txt : 20061017
<SEC-HEADER>0001209191-06-054948.hdr.sgml : 20061017
<ACCEPTANCE-DATETIME>20061017142204
ACCESSION NUMBER:		0001209191-06-054948
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060420
FILED AS OF DATE:		20061017
DATE AS OF CHANGE:		20061017

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMARIN CORP PLC
		CENTRAL INDEX KEY:			0001120246
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		GEMINI HOUSE
		STREET 2:		BARTHOLOMEWS WALK
		CITY:			ELY CAMBRIDGESHIRE
		STATE:			X0
		ZIP:			FK7 9JQ

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Clark John Smith II
		CENTRAL INDEX KEY:			0001378379

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-12642
		FILM NUMBER:		061148343

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212.692.6349

	MAIL ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Butts Robert W
		CENTRAL INDEX KEY:			0001378433

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-12642
		FILM NUMBER:		061148344

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212.692.6349

	MAIL ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Southpoint GP, LLC
		CENTRAL INDEX KEY:			0001378378
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-12642
		FILM NUMBER:		061148345

	BUSINESS ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212.692.6349

	MAIL ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Southpoint Capital Advisors LLC
		CENTRAL INDEX KEY:			0001378377
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-12642
		FILM NUMBER:		061148346

	BUSINESS ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212.692.6349

	MAIL ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Southpoint GP, LP
		CENTRAL INDEX KEY:			0001378376
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-12642
		FILM NUMBER:		061148347

	BUSINESS ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212.692.6349

	MAIL ADDRESS:	
		STREET 1:		623 FIFTH AVENUE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Southpoint Capital Advisors LP
		CENTRAL INDEX KEY:			0001319998
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-12642
		FILM NUMBER:		061148348

	BUSINESS ADDRESS:	
		STREET 1:		237 PARK AVENUE
		STREET 2:		SUITE 900
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		212.692.6350

	MAIL ADDRESS:	
		STREET 1:		237 PARK AVENUE
		STREET 2:		SUITE 900
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>bod40395_bod1sca.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-04-20</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001120246</issuerCik>
        <issuerName>AMARIN CORP PLC</issuerName>
        <issuerTradingSymbol>AMRN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001319998</rptOwnerCik>
            <rptOwnerName>Southpoint Capital Advisors LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>623 FIFTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2503</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001378376</rptOwnerCik>
            <rptOwnerName>Southpoint GP, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>623 FIFTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2503</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001378377</rptOwnerCik>
            <rptOwnerName>Southpoint Capital Advisors LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>623 FIFTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2503</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001378378</rptOwnerCik>
            <rptOwnerName>Southpoint GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>623 FIFTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2503</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001378433</rptOwnerCik>
            <rptOwnerName>Butts Robert W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>623 FIFTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2503</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001378379</rptOwnerCik>
            <rptOwnerName>Clark John Smith II</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>623 FIFTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2503</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8216329</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>2005-12-21 Warrants</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.43</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2006-06-19</value>
            </exerciseDate>
            <expirationDate>
                <value>2010-12-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Ordinary Shares, par value 0.0001</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2599010</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The filing of this Form 3 shall not be construed as an admission that Southpoint Capital Advisors LLC, Southpoint GP, LLC, Southpoint Capital Advisors LP, Southpoint GP, LP, Robert W. Butts or John S. Clark II is or was for the purposes of Section 16(a) of the Securities Exchange act of 1934, as amended, or otherwise the beneficial owner of any of the shares of common stock of Amarin Corporation plc (&quot;Common Stock&quot;) owned by Southpoint Fund LP, Southpoint Qualified Fund LP, Southpoint Offshore Fund, Ltd. or Southpoint Master Fund, LP.   Pursuant to Rule 16a-1, each of Southpoint Capital Advisors LLC, Southpoint GP, LLC, Southpoint Capital Advisors LP, Southpoint GP, LP, Robert W. Butts and John S. Clark II disclaim such beneficial ownership.</footnote>
        <footnote id="F2">Southpoint GP, LP, and its general partner Southpoint GP LLC,  hold indirectly shares of Common Stock on behalf of Southpoint Fund LP, Southpoint Qualified Fund LP, and Southpoint Master Fund, LP, of which Southpoint GP, LP is the general partner.  Southpoint Capital Advisors LP, and its general partner Southpoint Capital Advisors LLC, hold indirectly shares of Common Stock on behalf of Southpoint Fund LP, Southpoint Qualified Fund LP, Southpoint Master Fund, LP and Southpoint Offshore Fund, Ltd., for which Southpoint Capital Advisors LP serves as investment manager.  Robert W. Butts and John S. Clark II report the shares held indirectly held by Southpoint GP LLC and Southpoint Capital Advisors LLC because, as the managers of Southpoint GP LLC and Southpoint Capital Advisors LLC at the time of purchase, they controlled the voting and disposition of the securities.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Robert W. Butts, manager of Southpoint Capital Advisors LP</signatureName>
        <signatureDate>2006-10-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Robert W. Butts, manager of Southpoint GP, LP</signatureName>
        <signatureDate>2006-10-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Robert W. Butts, manager of Southpoint Capital Advisors LLC</signatureName>
        <signatureDate>2006-10-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Robert W. Butts, manager of Southpoint GP, LLC</signatureName>
        <signatureDate>2006-10-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Robert W. Butts</signatureName>
        <signatureDate>2006-10-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ John S. Clark II</signatureName>
        <signatureDate>2006-10-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----