Neuston
A collection of different organisms is an ecosystem and the collection of all of Earth's ecosystems is a biosphere.Also, actively interbreeding organisms in a particular area is called a population and populations make up communities.
Phytoplankton
I believe it is a population.
Nekton.Nekton are contrasted with plankton which refers to the aggregate of passively floating, drifting, or somewhat motile organisms occurring in a body of water, primarily comprising tiny algae and bacteria, small eggs and larvae of marine organisms, and protozoa and other minute predators.Thanks to, Wikipedia
fish of other live create-rs that can swim by them sevls
Plankton I think..
diatoms are free living. they are also called "floating pastures of the sea". they are one of the only organisms which are autotrophs.
Floating structure is usually called Shanty.
There are many definitions of surface diving. The most common is to go from the surface and dive to the bottom. Some people think it is different.
Biota: total collection of organisms of a geographic region or a time period.
ANSWER:Yes they are. See the related link for more information on this.
Mixtures that have floating particles in them are called suspensions.