phytoplankton

This in turn affects the production of microscopic plants called 'phytoplankton' , which is the main food for the pilchard.

In marine sediments marine 'phytoplankton' (floating plants) are widely used in biostratigraphy.

Virtually all life in the world's oceans is directly or indirectly dependent on one-celled plants called 'phytoplankton' .

This contrast may be due in part to differences in generation time between 'phytoplankton' and zooplankton.

This mixing leads to better growing conditions for tiny, free-floating ocean plants called 'phytoplankton' .