Do you want to see an ocean inside a bottle? Let's watch this video.
to add: afegir
to stir: moure
to half fill: omplir fins la meitat
to fix: fixar
to turn: fer girar
to mix: mesclar
to stay separate: quedar separat
to float: flotar
to take shape: prendre forma
Seawater is constantly moving because of the movement of currents, tides and waves. Tides are the rising and falling of sea level because of the gravitational forces of the Moon. Let's watch how they work.