PLANKTON

The sunlit surface waters of many oceans teem with life. most of it microscopic that drits with the currents.The whole drifting community is called the plankton", It is made up of plant-like phytoplankton, which use the energy of sunlite to make food from carbon dioxide and water, and zooplankton-animals that feed on both the phytoplankton and each other.this image shows the plankton in a splash of seawater magnified more than 25times.

DIATOMS

The phytolankton consist of microscopeic organisms such as diatoms  and cyanobacteria. Diatoms haves sheels of glassy silica that fit tigether like tiny boxes with lids, and they exist in a dazzling variety of forms. They thrive in coll seas, where they turn the water grey-green and often multiply into vast cloudy "blooms" that are visible from space.

CRAB LARVA

Among the members of the zooplankton are the eggs and young of animals that have very different shapes and lives when adult. They include the eggs of reef corals and infant fish, molluscs,and crustaceans like this crab larva. Drifting in the plankton provides them with food and helps them disperse through the oceans to find new places to live.

CYANOBACTERIA

Once known as " blue-green algae" these simple organisms were among the first forms of life to appear on earth, more than 3.5 billion years ago.They still flourish in the oceans where like diatoms, they turn carbon diatoms, they turn carbon dioxide and water in to sugary and water in to surgary carbohydrates.