Glass eels
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Glass eels
The young eels that arrive from sea at river mouths are known as glass eels, because they are transparent. Between July and December each year, millions arrive after drifting and swimming thousands of kilometres from the tropics. They are typically 5.5–6.5 centimetres long.
About this item
NIWA - National Institute of Water and Atmospheric Research
Photograph by Nelson Boustead
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