Glossary | Z

Aphotic Zone
Zone without light; that portion of the ocean where light is insufficient for plants to carry on photosynthesis
Zero tide
average of the lower low tides
Zonation
distribution of the plants and animals in a community into recognizable, distinctive zones
Zooanthellae
photosynthetic microorganisms that live symbiotically in the tissues of organisms such as corals and jellies
Zooplankton
planktonic animals suspended in the water column
Zygote
fertilized egg