Roberto Rinaldi / Yellow fan coral / Seafan (Paramuricea clavata) amongst mass of invasive algae (Caulerpa taxifolia) with Rainbow wrasse fish (Coris julis), Strait of Messina, Southern Italy

Wild Wonders of Europe / Banfi / Nudibranch (Flabellina affinis) on algae (Caulerpa taxifolia) Larvotto Marine Reserve, Monaco, Mediterranean Sea, July 2009

Georgette Douwma / Sea grapes (Caulerpa recemosa). Caulerpa. North Sulawesi, Indonesia.

Georgette Douwma / Sea grapes (Caulerpa recemosa). Caulerpa. North Sulawesi, Indonesia.

Alex Mustard / Noble pen shell (Pinna nobilis), a large bivalve shell (this individual was about 60cm/2ft), endemic to the Mediterraean, grows vertically from a bed of Caulerpa algae. Calasetta, Island of Sant'Antio...

Alex Mustard / Hairy / striated frogfish (Antennarius striatus) amongst algae (Caulerpa taxifolia) West Palm Beach, Gulf Stream, West Atlantic Ocean, Florida, USA.

Roberto Rinaldi / Yellow fan coral / Seafan (Paramuricea clavata) amongst invasive algae (Caulerpa taxifolia), Strait of Messina, Southern Italy

Roberto Rinaldi / Field of invasive algae (Caulerpa taxifolia), Strait of Messina, Southern Italy

Roberto Rinaldi / Sponge (Aplysina aerophoba) amongst mass of invasive algae (Caulerpa taxifolia) with Rainbow wrasse fish (Coris julis), Strait of Messina, Southern Italy

Roberto Rinaldi / Alicia sea anemone (Alicia mirabilis) on fronds of invasive algae (Caulerpa taxifolia) Strait of Messina, Southern Italy

Roberto Rinaldi / Yellow fan coral / Seafan (Paramuricea clavata) amongst mass of invasive algae (Caulerpa taxifolia), Strait of Messina, Southern Italy

Roberto Rinaldi / Diver viewing Yellow fan coral / Seafan (Paramuricea clavata) amongst mass of invasive algae (Caulerpa taxifolia), Strait of Messina, Southern Italy

Roberto Rinaldi / Tube anemone (Cerianthus membranaceus) on sea bed amongst shoots of the invasive algae (Caulerpa taxifolia), Strait of Messina, Southern Italy Sequence 2/2

Roberto Rinaldi / Diver viewing mass of invasive algae (Caulerpa taxifolia), Strait of Messina, Southern Italy

Roberto Rinaldi / Seafan coral (Eunicella cavolini) amongst invasive algae (Caulerpa taxifolia) Strait of Messina, Southern Italy

Roberto Rinaldi / Growth shoots and fronds of invasive algae (Caulerpa taxifolia) Strait of Messina, Southern Italy

Roberto Rinaldi / Black faced blenny (Tripterygion delaisi) amongst fronds of invasive algae (Caulerpa taxifolia) Strait of Messina, Southern Italy

Juergen Freund / Green grape algae / Sea grape (Caulerpa sp.) North Sulawesi, Indonesia.

Roberto Rinaldi / Damselfish (Chromis sp) passing Grapeweed (Caulerpa racemosa) off the coast of Capraia. Tuscany, Italy, August.

Juergen Freund / Sample of Green algae {Caulerpa filicoides} from Coral Reef census, Lizard Island, Queensland, Australia, April 2008. To store the algae, specimens are pressed and dried out in a herbarium press, this...

Juergen Freund / Sample of Green algae {Caulerpa sp} from Coral Reef census, Lizard Island, Queensland, Australia, April 2008. To store the algae, specimens are pressed and dried out in a herbarium press, this simple...

Juergen Freund / Sample of Green algae {Caulerpa racemosa} from Coral Reef census, Lizard Island, Queensland, Australia, April 2008. To store the algae, specimens are pressed and dried out in a herbarium press, this s...

Juergen Freund / Sample of Green algae {Caulerpa racemosa} from Coral Reef census, Lizard Island, Queensland, Australia, April 2008. To store the algae, specimens are pressed and dried out in a herbarium press, this s...

Juergen Freund / Sample of Green algae {Caulerpa crassifolia} from Coral Reef census, Lizard Island, Queensland, Australia, April 2008. To store the algae, specimens are pressed and dried out in a herbarium press, thi...

Jose B. Ruiz / Seaweed {Caulerpa prolifera} Mediterranean. Spain.

Jose B. Ruiz / Seaweed {Caulerpa prolifera} in the Mediterranean, Spain.

Jose B. Ruiz / Seaweed {Caulerpa prolifera} Mediterranean. Spain.

Jose B. Ruiz / Macro algal seaweed {Caulerpa prolifera} Mediterranean

Roberto Rinaldi / Man selling sea grapes (caulepra racemosa) at food market, Puerto Princessa, Philippines. 2001

Tom Vierus / A local woman harvesting Sea grapes (Caulerpa lentillifera), a commonly consumed local food, in about 2m depth at a rivermouth near Munda. New Georgia, Western Province, Solomon Islands. July, 2023.

Sergio Hanquet / Green algae (Caulerpa webbiana) Tenerife, Canary Islands.

Sergio Hanquet / Clingfish (Opeatogenys cadenati) camouflaged on seaweed, Tenerife, Canary Islands.

Sergio Hanquet / Grass crack anemone (Paranemonia cinerea) on seaweed (Caulerpa prolifera) Tenerife, Canary Islands.

Sergio Hanquet / Sea snail (Smaragdia viridis) on seaweed (Caulerpa prolifera) Tenerife, Canary Islands.

Sergio Hanquet / Sea snails (Smaragdia viridis) on seaweed (Caulerpa prolifera) Tenerife, Canary Islands.

Sergio Hanquet / Sea snail (Oxynoe olivacea) on seaweed (Caulerpa prolifera) Tenerife, Canary Islands.

Sergio Hanquet / Sea snail (Oxynoe benchijigua) on seaweed (Caulerpa prolifera) Tenerife, Canary Islands.