Over the last 20 years, losses of giant kelp has increased water temperatures and reduced macroalgae, potentially adversely affecting weedy seadragons.

Significant losses of giant kelp (Macrocystis pyrifera) have been documented over the past 20 years, associated with increased water temperatures. The reduction in macroalgae could adversely affect seadragons although this has not been demonstrated.

^{• Image | © Images by John ‘K’, Some Rights Reserved (CC BY-NC-ND 2.0)
• Sources | (Edyvane, 2003; Pollom, 2017)}

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