The color and motion of water
Oceans and Water
These pages stay close to water as a system: what it absorbs, what it reflects, how it moves, and what that changes for the rest of the planet.
Best Starting Point
Start with Why is the ocean blue?
If you want one page that gives the cleanest first pass through oceans and water, this is the best place to begin before branching out.
A live ocean lab that shows how depth, plankton, sediment, and surface glare shift water from cobalt blue to turquoise, green, or brown.
Start Here If You Are Wondering About...
Pick the closest first question in Oceans and Water
These paths separate the most common sub-intents inside this topic cluster, so the first click gets readers closer to the right explanation.
A live ocean lab that shows how depth, plankton, sediment, and surface glare shift water from cobalt blue to turquoise, green, or brown.
If you want the Moon-Sun simulator angle first What causes tides?A tide lab that lets you combine lunar pull, solar alignment, and coastline shape to see why some places have tiny tides and others have huge ones.
If you want the Salinity lab angle first Why is the ocean salty?A salinity lab that lets you mix river minerals, evaporation, fresh water, and seafloor chemistry to see how salt levels change.
If you want the Density lab angle first Why does ice float?An ice-buoyancy lab that lets you vary temperature, salinity, pressure, and lattice openness to compare lake ice, sea ice, slush, and dense high-pressure ice.
Fresh In This Cluster
Recently updated pages in Oceans and Water
These are the pages in this topic cluster that changed most recently, which makes them good re-entry points for readers and good revisit candidates for crawlers.
A live ocean lab that shows how depth, plankton, sediment, and surface glare shift water from cobalt blue to turquoise, green, or brown.
Updated Apr 11, 2026 What causes tides?A tide lab that lets you combine lunar pull, solar alignment, and coastline shape to see why some places have tiny tides and others have huge ones.
Updated Apr 11, 2026 Why is the ocean salty?A salinity lab that lets you mix river minerals, evaporation, fresh water, and seafloor chemistry to see how salt levels change.
Updated Apr 11, 2026 Why does ice float?An ice-buoyancy lab that lets you vary temperature, salinity, pressure, and lattice openness to compare lake ice, sea ice, slush, and dense high-pressure ice.
How To Explore This Cluster
Use the strongest first page, then branch by sub-question
The point of a topic hub is to keep similar questions connected while still making it easy to choose the right starting page.
Explainers
Pages in Oceans and Water
Ocean color, salinity, tides, and buoyancy explaining why water behaves so differently from the air above it.
A live ocean lab that shows how depth, plankton, sediment, and surface glare shift water from cobalt blue to turquoise, green, or brown.
Oceans and Water What causes tides?A tide lab that lets you combine lunar pull, solar alignment, and coastline shape to see why some places have tiny tides and others have huge ones.
Oceans and Water Why is the ocean salty?A salinity lab that lets you mix river minerals, evaporation, fresh water, and seafloor chemistry to see how salt levels change.
Oceans and Water Why does ice float?An ice-buoyancy lab that lets you vary temperature, salinity, pressure, and lattice openness to compare lake ice, sea ice, slush, and dense high-pressure ice.
Further Reading
Trusted places to keep exploring
These are good next stops if you want to move from a quick explainer into broader source material.