Isoetes eludens
... that the only known location of Isoetes eludens, a recently discovered aquatic plant, is a single 2 m (6.6 ft) wide and 15 cm (5.9 in) deep seasonal rock pool?
... that the only known location of <i id="mwAvA"><b id="mwAvE"><a href="./Isoetes_eludens" id="mwAvI" rel="mw:WikiLink" title="Isoetes eludens">Isoetes eludens</a></b></i>, a recently discovered <a href="./Aquatic_plant" id="mwAvM" rel="mw:WikiLink" title="Aquatic plant">aquatic plant</a>, is a single <span about="#mwt30" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"2"},"2":{"wt":"m"},"3":{"wt":"ft"},"abbr":{"wt":"on"}},"i":0}}]}' id="mwAvQ" typeof="mw:Transclusion">2</span><span about="#mwt30" typeof="mw:Entity"> </span><span about="#mwt30">m (6.6</span><span about="#mwt30" typeof="mw:Entity"> </span><span about="#mwt30">ft)</span> wide and <span about="#mwt31" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"15"},"2":{"wt":"cm"},"3":{"wt":"in"},"abbr":{"wt":"on"}},"i":0}}]}' id="mwAvU" typeof="mw:Transclusion">15</span><span about="#mwt31" typeof="mw:Entity"> </span><span about="#mwt31">cm (5.9</span><span about="#mwt31" typeof="mw:Entity"> </span><span about="#mwt31">in)</span> deep seasonal <a href="./Panhole" id="mwAvY" rel="mw:WikiLink" title="Panhole">rock pool</a>?