General photos Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Surveying typical juvenile lamprey habitat on the River Boyne Adult River lamprey Lampetra fluviatilis River Fergus Drainage Scheme Adult river lampreys, River Fergus, Co Clare Ecofact lamprey surveys Brook lamprey transformers Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Juvenile lamprey survey Plate 1 Juvenile lamprey survey using electrofishing Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Ecofact lamprey surveys Adult sea lampreys Plate 9 Adult sea lampreys Petromyzon marinus