Common names
caulerpa
Full scientific name
Caulerpa brachypus Harv.
Number of records
43
Currently classified as a weed
Yes
Caulerpa (Caulerpa brachypus) is a green seaweed native to the tropical and subtropical Indo-Pacific region. It was first detected in New Zealand in 2021. The alga spreads across the seafloor, forming dense mats from creeping stolons that produce upright fronds and root-like holdfasts. It reproduces primarily through fragmentation, with pieces dispersed by currents, anchors, fishing gear and other human activities. Even small fragments can establish new colonies. It grows on sand, mud and rocky reefs in sheltered coastal waters.
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