Bangor University will conduct intertidal seagrass area surveys and sampling in Gelliswick Bay from 6th to 10th October 2025.

  1. MARINERS ARE HEREBY ADVISED that Bangor University will be carrying out intertidal seagrass area surveys and sampling at Gelliswick Bay from 6th to 10th October 2025 (see image with marked operational area attached). 
  2. A snorkel survey will be undertaken in Gelliswick area subject to suitable tide and weather conditions. Work will mainly take place during low tide.
  3. Mariners are requested to navigate with caution and pass at a safe speed when operating in these areas.
  4. Admiralty Charts 3274, 3275, IMRAY Y26, and 2600 Atlas refer.
  5. This Notice to Mariners will self-cancel at 23:59 on 10th October 2025.