El Gulf yeBothnia gomba riri pakati pekumadokero kweFinland nekumabvazuva kweSweden. Iyo yepamusoro nzvimbo iri 116.300 km², iri makiromita 725 kureba, pakati pe80 ne240 km yakafara uye avhareji kudzika kwemamita makumi matanhatu, nehurefu hwayo iri 60. Ndiro ruoko rwekuchamhembe rweGungwa reBaltic. Mvura yaro yakadzika, inotonhora, chikamu chekuchamhembe chakasara chando kwemwedzi mishanu pagore, uye chakadzika munyu, uye mhando dzakasiyana dzehove dzemvura yakachena dzinogona kugara mumvura dzayo.
Botnia ndiko latinization yeiyo Yekare Norse mutauro mutauro botn, zvinoreva kuti "pasi." Iro zita botn raishandiswa kune gulf saHelsingjabotn mumutauro wekare weNorse, zvichipesana neHälsingland, ndiro raive zita rakapihwa nzvimbo yemahombekombe kumadokero kweguyo. Gare gare, botten yakazoshandiswa kumatunhu eVästerbotten kumadokero uye Österbotten kuchikamu chekumabvazuva ("East Bottom" uye "West Bottom"). Zita reFinland Österbotten, Pohjanmaa, kana "Pohja" - nyika, inopa chiratidzo kune zvarinoreva mumitauro miviri: pohja zvinoreva "zvakaderera" uye "Maodzanyemba" panguva imwe chete.
Iyo Gulf yeBothnia, pamwe neBaltic Gungwa, chikamu cheavo vekare, kudzamara Pleistocene, yaumba bani rakakura rebani rerwizi rweEridanos Rwizi. Rwizi urwu rwakatangira mudunhu reLapland, ruchiyerera nepanonzi manje Gulf yeGothnia, ndokudururira muNorth Sea ichiumba mudenga wakakura kwazvo.
Kubva paPleistocene paive nezvikamu zvinoverengeka zveglacierism kuburikidza iyo nzvimbo yakanyura pazasi pegungwa nekuda kwekurema kwechando. Izvi zvakaitika makore zviuru mazana manomwe apfuura. Kubva ipapo zvichienda mberi, hunhu hwakagadza kuti chii chiriko gomba chaive chakaumbwa nehuremu hwechando sheet raive richinyura dunhu uye nekuzotevera isostatic kugadzirisa.