What is a pelagic survey? why are pelagic surveys conducted for marine birds

The survey of organisms that live on the different pelagic zones are referred to pelagic survey.

Explanation:

A pelagic zone is considered as a zone in the marine surface that is the surface if the seas, the word means open sea . This survey is important because the organisms in the sea are lost due to increasing environmental stress and climatic burden.

Surveying these organisms and getting the report will enable us to build a report and come to conclusion about the environmental hazards we as humans cause to the fellow organisms of our environment.

this is math not biology xd