First hybrid shark found off Australian coast
<p><span word="Scientists">Scientists</span> <span word="said">said</span> <span word="on">on</span> <span word="Tuesday">Tuesday</span> <span word="that">that</span> <span word="they">they</span> <span word="had">had</span> <span word="discovered">discovered</span> <span word="the">the</span> <span word="world">world</span>'<span word="s">s</span> <span word="first">first</span> <span word="hybrid">hybrid</span> <span word="sharks">sharks</span> <span word="in">in</span> <span word="Australian">Australian</span> <span word="waters">waters</span>, <span word="a">a</span> <span word="potential">potential</span> <span word="sign">sign</span> <span word="the">the</span> <span word="predators">predators</span> <span word="were">were</span> <span word="adapting">adapting</span> <span word="to">to</span> <span word="cope">cope</span> <span word="with">with</span> <span word="climate">climate</span> <span word="change">change</span>.</p><p><span word="The">The</span> <span word="mating">mating</span> <span word="of">of</span> <span word="the">the</span> <span word="local">local</span> <span word="Australian">Australian</span> <span word="black">black</span>-<span word="tip">tip</span> <span word="shark">shark</span> <span word="with">with</span> <span word="its">its</span> <span word="global">global</span> <span word="counterpart">counterpart</span>, <span word="the">the</span> <span word="common">common</span> <span word="black">black</span>-<span word="tip">tip</span>, <span word="was">was</span> <span word="an">an</span> <span word="unprecedented">unprecedented</span> <span word="discovery">discovery</span> <span word="with">with</span> <span word="implications">implications</span> <span word="for">for</span> <span word="the">the</span> <span word="entire">entire</span> <span word="shark">shark</span> <span word="world">world</span>, <span word="said">said</span> <span word="lead">lead</span> <span word="researcher">researcher</span> <span word="Jess">Jess</span> <span word="Morgan">Morgan</span>.</p><p><span word="Morgan">Morgan</span>, <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Queensland">Queensland</span>, <span word="said">said</span> <span word="that">that</span> <span word="hybrid">hybrid</span> <span word="sharks">sharks</span> <span word="have">have</span> <span word="never">never</span> <span word="been">been</span> <span word="seen">seen</span> <span word="before">before</span>.</p><p>"<span word="This">This</span> <span word="is">is</span> <span word="evolution">evolution</span> <span word="in">in</span> <span word="action">action</span>," <span word="she">she</span> <span word="said">said</span>.</p><p><span word="Colin">Colin</span> <span word="Simpfendorfer">Simpfendorfer</span>, <span word="a">a</span> <span word="partner">partner</span> <span word="in">in</span> <span word="Morgan">Morgan</span>'<span word="s">s</span> <span word="research">research</span> <span word="from">from</span> <span word="James">James</span> <span word="Cook">Cook</span> <span word="University">University</span>, <span word="said">said</span> <span word="initial">initial</span> <span word="studies">studies</span> <span word="suggested">suggested</span> <span word="the">the</span> <span word="hybrid">hybrid</span> <span word="species">species</span> <span word="was">was</span> <span word="relatively">relatively</span> <span word="robust">robust</span>, <span word="with">with</span> <span word="a">a</span> <span word="number">number</span> <span word="of">of</span> <span word="generations">generations</span> <span word="discovered">discovered</span> <span word="across">across</span> 57 <span word="specimens">specimens</span>.</p><p><span word="The">The</span> <span word="find">find</span> <span word="was">was</span> <span word="made">made</span> <span word="during">during</span> <span word="cataloguing">cataloguing</span> <span word="work">work</span> <span word="off">off</span> <span word="Australia">Australia</span>'<span word="s">s</span> <span word="east">east</span> <span word="coast">coast</span> <span word="when">when</span> <span word="Morgan">Morgan</span> <span word="said">said</span> <span word="genetic">genetic</span> <span word="testing">testing</span> <span word="showed">showed</span> <span word="certain">certain</span> <span word="sharks">sharks</span> <span word="to">to</span> <span word="be">be</span> <span word="one">one</span> <span word="species">species</span> <span word="when">when</span> <span word="physically">physically</span> <span word="they">they</span> <span word="looked">looked</span> <span word="to">to</span> <span word="be">be</span> <span word="another">another</span>.</p><p><span word="The">The</span> <span word="Australian">Australian</span> <span word="black">black</span>-<span word="tip">tip</span> <span word="is">is</span> <span word="slightly">slightly</span> <span word="smaller">smaller</span> <span word="than">than</span> <span word="its">its</span> <span word="common">common</span> <span word="cousin">cousin</span> <span word="and">and</span> <span word="can">can</span> <span word="only">only</span> <span word="live">live</span> <span word="in">in</span> <span word="tropical">tropical</span> <span word="waters">waters</span>, <span word="but">but</span> <span word="its">its</span> <span word="hybrid">hybrid</span> <span word="offspring">offspring</span> <span word="have">have</span> <span word="been">been</span> <span word="found">found</span> 2,000 <span word="kilometers">kilometers</span> <span word="down">down</span> <span word="the">the</span> <span word="coast">coast</span>, <span word="in">in</span> <span word="cooler">cooler</span> <span word="seas">seas</span>.</p><p><span word="It">It</span> <span word="means">means</span> <span word="the">the</span> <span word="Australian">Australian</span> <span word="black">black</span>-<span word="tip">tip</span> <span word="could">could</span> <span word="be">be</span> <span word="adapting">adapting</span> <span word="to">to</span> <span word="ensure">ensure</span> <span word="its">its</span> <span word="survival">survival</span> <span word="as">as</span> <span word="sea">sea</span> <span word="temperatures">temperatures</span> <span word="change">change</span> <span word="because">because</span> <span word="of">of</span> <span word="global">global</span> <span word="warming">warming</span>.</p><p><span word="Morgan">Morgan</span> <span word="explained">explained</span> <span word="that">that</span> "<span word="If">If</span> <span word="it">it</span> <span word="hybridizes">hybridizes</span> <span word="with">with</span> <span word="the">the</span> <span word="common">common</span> <span word="species">species</span> <span word="it">it</span> <span word="can">can</span> <span word="effectively">effectively</span> <span word="shift">shift</span> <span word="its">its</span> <span word="range">range</span> <span word="further">further</span> <span word="south">south</span> <span word="into">into</span> <span word="cooler">cooler</span> <span word="waters">waters</span>, <span word="so">so</span> <span word="the">the</span> <span word="effect">effect</span> <span word="of">of</span> <span word="this">this</span> <span word="hybridizing">hybridizing</span> <span word="is">is</span> <span word="a">a</span> <span word="range">range</span> <span word="expansion">expansion</span>."</p>
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