Back Seevlak Afrikaans Livel d'a mar AN مستوى سطح البحر Arabic Nivel de la mar AST Dəniz səviyyəsi Azerbaijani دنیز سطحی AZB Диңгеҙ кимәле Bashkir Узровень мора Byelorussian Морско равнище Bulgarian समुंद्र तल Bihari
- For the effects of global warming on sea levels, see global warming
The sea level is the average height of the ocean (informally called the sea). The word 'average' must be used because the height of the sea changes with the tides. The height of mountains, countries, and so on, is almost always given as "above sea level".