Water is a special substance. Not only do humans rely on water for survival, but it is also fascinating to play with and makes a great topic to investigate. Many simple investigations can be done with water, at home or at school, to guide children's science learning. This article describes a sequence of online learning experiences that were set for Foundation-level children in Sydney NSW, during the recent school lockdown due to COVID-19. The lessons were communicated to 5-6-year-old children via the Seesaw digital app and were part of a unit on weather and water designed for children in their first year of school. Examples of student responses to these water-based learning tasks are provided.