Topic
Plankton
2 questions tagged Plankton — spanning every one of the seven Ws.
why
Why do bioluminescent plankton make waves glow at night?
Some tiny plankton flash blue light when disturbed, so breaking waves can look like they are glowing. The light is a chemical defense response, not electricity.
OceanPlankton
why
Why do some seas become unusually red or brown?
These color changes usually happen when algae or other microorganisms bloom in huge numbers. Pigments in the water can make the sea look red, brown, green, or even purple.
Oceans and seasPlankton