The document discusses the relationship between phytoplankton, zooplankton, and nekton, highlighting how various marine organisms consume these primary producers and consumers. It explains that zooplankton includes various species, such as protozoa and larval fish, while nekton refers to free-swimming organisms like fish and marine mammals. References to marine biology texts are provided to support the information presented.

1. Phyto-Zoo-Benthos-fish relationship
By-
Mohammad Belal Hossain
Lecturer
FIMS, NSTU

3. Phytoplankton are consumed by many organisms,
including diverse species of zooplankton.
Zooplankton are free-floating consumers and
include single-celled protozoa, tiny crustaceans,
and the larval stages of species such as mollusks
and fish.
Zooplankton and phytoplankton are consumed by
the nekton, free-swimming marine organisms such
as fish, marine mammals, and penguins, as well as
species on the ocean bottom, including bivalves,
crustaceans, and snails.

6. References
1. Introduction to Marine Biology- McConnaughey
2. The Oceans –Sverdrup et al

7. References
1. Introduction to Marine Biology- McConnaughey
2. The Oceans –Sverdrup et al