A photomosaic approach developed by Dr Jon James ( in collaboration with Sea Trust Wales (

Operating mode

Logon instructions:

1. Please fill out the short form on the right (this may help us develop the project further).

2. Select either 'Research' or 'Outreach' operating mode using the buttons above.

3. Please note 'Pwll y Môr' is not currently optimised for display on a mobile phone.

Select collection:

Image/Feature Notes:



Select survey:



Species logged:

Upload the survey to the Pwll-y-mor server

Download the survey data as a .CSV file

All enquires Jon James: ''

Quick start guide:

This website explores the use of photomosaics in habitat monitoring (recording and counting of species) and in the provision of resources for education and public out-reach.

The possible benefits of this approach are seen to be:

1. The combination of both detail and the broader context within a single image, for species monitoring and recording.

2. The provision of an immersive experience in which, for example, a rockpool can be 'explored' by the public, rather just passively viewed.


1. My son, Laurie James ( for oversight and technical help and advice.

2. The staff of the wildlife charity 'SEA TRUST WALES' ( for encouragement and ongoing collaboration.

3. The developers of the three, open source software packages on which this website is based:

i. 'Hugin - Panorama photo-stitcher' (

ii. 'Deepzoom tools' (

iii. 'OpenSeadragon - An open-source, web-based viewer for high-resolution zoomable images' (

4. 'The Rock Pool Project' ( and their local coordinator Bill Dixon for introducing me to surveying.

(All enquires Dr Jon James: '')