Sea grapes, Caulerpa racemosa


Short description of Caulerpa racemosa, Sea grapes

A green seaweed with fairly short, erect fronds (<15 cm) bearing un-crowded, vesiculate ramuli (short branchlets) which are radially or distichously arranged.   Branchlets are spherical, club-shaped or disc shaped.  Grape alga often forms a dense mat of branching stolons (creeping horizontal shoots). 

Description of Caulerpa racemosa, Sea grapes status in GB

No records exist from Britain.

Habitat summary: Caulerpa racemosa, Sea grapes

Occurs on most types of substrate, from the intertidal to depths of 70 m in very clear water, but is most often found between 10-35 m.  It can colonize seagrass meadows and areas already occupied by other seaweeds.

Overview table

Environment: Marine
Species status: Non-Native
Native range: Australia
Functional type: Algae (macroalgae)
Status in England: Non-Native
Status in Scotland: Non-Native
Status in Wales: Non-Native
Location of first record: No British records to date.
Date of first record: Unknown

Distribution map

GB Distribution from NBN Atlas

Author's name:

Natalie Sweet

Last updated:

October 3rd 2019

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