The paper must explain what the continuous plankton recorder is, how it works and what it does. Additionally the following questions must be answered: what are the spatial patterns in phytoplankton biomass and composition over the atlantic. How does that mesh with patterns in zooplankton? What mechanisms can be used to explain those patterns? Then start to address how biomass or composition of phytoplankton has changed over the length of the CPR? What hypotheses can explain these changes? Have the been tested and how? How have zooplannkton changed? How is that related to phytoplankton, or to changes in fish communities? The CPR had been used most recently to develop environmental niche models for plankton that help predict reponses to climate change.