The Greek <a href="https://en.wikipedia.org/wiki/Oil_tanker" id="mwARs" rel="mw:WikiLink" title="Oil tanker">oil tanker</a> <i id="mwARw"><a class="mw-redirect" href="https://en.wikipedia.org/wiki/Prestige_(oil_tanker)" id="mwAR0" rel="mw:WikiLink" title="Prestige (oil tanker)">Prestige</a></i> splits in half and sinks off the coast of <a href="https://en.wikipedia.org/wiki/Galicia_(Spain)" id="mwAR4" rel="mw:WikiLink" title="Galicia (Spain)">Galicia</a>, releasing over <span about="#mwt51" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"76,000"},"2":{"wt":"m3"},"3":{"wt":"e6usgal"},"abbr":{"wt":"unit"}},"i":0}}]}' id="mwAR8" typeof="mw:Transclusion">76,000</span><span about="#mwt51" typeof="mw:Entity"> </span><span about="#mwt51">m</span><sup about="#mwt51">3</sup><span about="#mwt51"> (20</span><span about="#mwt51" typeof="mw:Entity"> </span><span about="#mwt51">million</span><span about="#mwt51" typeof="mw:Entity"> </span><span about="#mwt51">US</span><span about="#mwt51" typeof="mw:Entity"> </span><span about="#mwt51">gal)</span> of oil in the <a href="https://en.wikipedia.org/wiki/Prestige_oil_spill" id="mwASA" rel="mw:WikiLink" title="Prestige oil spill">largest environmental disaster</a> in Spanish and Portuguese history.