Is miol mor miolchnamhach a fhaightear ar fud an Domhain e an droimeiteach (fine Balaenopteridae). [1] Tugtar an rorcual air freisin. [2] [3] Criathraionn an mhiolchnamh ina bheal an plancton as an saile, agus ta 10-100 clais ar feadh na scornai ionas gur feidir an scornach a leathnu amach is toirt ollmhor saile a phroiseail is e ag ithe. An eite bheag droma gar don eireaball . An baineannach nios mo na an fireannach. [4]