In the autumn of 2017, we conducted the first comprehensive grey seal (Halichoerus grypus) pup census along the North Wales coastline since 2004. Commissioned by Natural Resources Wales (NRW), this survey aimed to update knowledge on grey seal pup production and distribution in the region.
Methodology:
The study area encompassed the coastline from Aberystwyth to the Dee Estuary. Our marine mammal team employed a combination of boats, sea kayaks, and on-foot surveys to access and monitor 79 active pupping sites. Additionally, drone technology was utilised to supplement pup counts and assess sampling accuracy, particularly at The Skerries. Surveys were conducted in 7 to 10-day cycles throughout the pupping season to ensure comprehensive coverage.
Findings:
The census recorded a total of 279 grey seal pups across the surveyed sites, indicating a significant increase in pup production compared to the previous 2004 census. This rise aligns with trends observed in other UK regions, such as South-West Wales, suggesting a broader national increase in grey seal populations. The survey also identified new pupping sites, contributing valuable data for ongoing conservation efforts.
Implications:
The findings from this census provide critical insights into the current status of grey seals in North Wales, informing conservation strategies and management plans. The increase in pup production underscores the importance of continued monitoring to support the species’ recovery and address potential challenges arising from environmental changes and human activities.
This project highlights our commitment to marine mammal research and conservation, utilising innovative survey techniques to gather essential ecological data.
