Thousands of eels are being released into the wild this week as a conservation project involving six South Yorkshire schools reaches its conclusion.
Primary pupils in the Dearne Valley and Don Valley have been looking after tanks of elvers for the last six weeks, learning all about their fascinating life cycles.
Each child from schools include Windhill and Wath Central primaries will each be releasing around 100 baby eels into the wetlands and the Sprotbrough Flash, Potteric Carr and Old Moor nature reserves.
There they will stay and grow for the next 15 to 40 years before they leave to make the epic journey back to the Sargasso Sea near the American coast to spawn.
The South Yorkshire primaries are the most northerly ones taking part in the national Eels in Schools project which this year has involved over 2,000 pupils.
Work has been co-ordinated with the help of the Dearne Valley Nature Improvement Area.