South Asian river dolphin
... that the South Asian river dolphin is nearly blind and relies on echolocation for navigation?
... that the <b id="mwCO0"><a href="./South_Asian_river_dolphin" id="mwCO4" rel="mw:WikiLink" title="South Asian river dolphin">South Asian river dolphin</a></b> is nearly blind and relies on <a href="./Animal_echolocation" id="mwCO8" rel="mw:WikiLink" title="Animal echolocation">echolocation</a> for navigation?