Aquatic Plants & Algae -

Dense "beds" of plants and kelp forests provide nurseries for young fish and hiding spots from predators.

These plants are not attached to the bottom at all. They drift with the current, absorbing nutrients directly through roots hanging in the water. Examples include duckweed and water hyacinth. The World of Algae Aquatic Plants & Algae

Is this for a (middle school, college, etc.)? Dense "beds" of plants and kelp forests provide

These include the largest seaweeds, such as kelp and sargassum. They are almost exclusively marine and can create massive "underwater forests." etc.)? These include the largest seaweeds

Aquatic plants are generally categorized by their growth habit and how they interact with the water column: