Leptocephali are classically described as being willow-leaf shaped. This shape is ideally suited to being caught in marine currents to be transported over large distances. Climate change may be having a direct effect on the way the currents or gyres convey the eels; the currents have been changing in strength and direction which could mean that the leptocephali are not being delivered to where they can thrive – they are missing their target. The warming waters may also be affecting the production of the specific plankton, or the detritus from those plankton types, that the leptocephali feed on.
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