Module 4: Visual Surveys

This module introduces underwater visual census (UVC) as the primary method for sampling syngnathids in situ. Using scuba or snorkeling, visual surveys enable direct observation of animals in their natural habitats, providing key information on abundance, distribution, behaviour, and ecology.

The module explains when visual surveys are appropriate and outlines their main advantages and limitations. It provides guidance on selecting survey types, as well as choosing suitable locations and timing to maximize detection and data quality.

Detailed protocols are included for two widely used approaches: timed swim surveys and belt transects. Emphasis is placed on standardization to ensure results are consistent and comparable across sites and time. These methods support robust, non-extractive monitoring of syngnathid populations and habitats.