Pasi pemvura ine munyu inenge 361,000,000 km2 (139,000,000 sq mi) uye inowanzogoverwa mumakungwa makuru uye madiki madiki, nemakungwa anofukidza anenge 71% yepasi uye 90% yepasi yepasi. Gungwa rine 97% yemvura yepasi, uye oceanographers vakataura kuti isingasviki 5% yeWorld Ocean yakaongororwa. Huwandu hwese hunenge 1.35 bhiriyoni cubic kilometers (320 miriyoni cubic mi) ine avhareji yakadzika yeanenge 3,700 metres (12,100 ft). Sezvo gungwa renyika iri chinhu chikuru chepasi re hydrosphere, inoumba chikamu chehupenyu, uye inokanganisa mamiriro ekunze nemamiriro ekunze. Gungwa reNyika inzvimbo inozivikanwa yemarudzi mazana maviri nemakumi matatu ezviuru, asi nekuda kwekuti haina kuongororwa, huwandu hwemarudzi ari mugungwa huripo, pamwe anopfuura mamirioni maviri.
isingasviki 5%