Southern right whales
...that the Southern right whales off the coast of Argentina 'sail' by raising their flukes and catching the wind?
...that the <b id="mwBC0"><a href="./Southern_right_whale" id="mwBC4" rel="mw:WikiLink" title="Southern right whale">Southern right whales</a></b> off the coast of <a href="./Argentina" id="mwBC8" rel="mw:WikiLink" title="Argentina">Argentina</a> 'sail' by raising their flukes and catching the wind?