Georgette Douwma / RF - Spotted hawkfish (Cirrhitichthys aprinus) perched on Gold mouth sea squirt (Polycarpa aurata). West Papua, Indonesia. (This image may be licensed either as rights managed or royalty free.)
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Robin Chittenden / Golden Star Tunicate (Botryllus schlosseri) Norfolk UK, November
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Georgette Douwma / Valentine's puffer (Canthigaster valentini) with Golden sea squirts (Polycarpa aurata) Lembeh, Sulawesi, Indonesia.
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Georgette Douwma / Sea squirts: Golden sea squirt (Polycarpa aurata) and Blue club tunicate (Rhopalaea crassa) Lembeh, Sulawesi, Indonesia.
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Constantinos Petrinos / Chromodorid nudibranch (Chromodoris annae) on Sea Squirt (Polycarpa aurata) Lembeh Strait, North Sulawesi, Indonesia.
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Sue Daly / Star ascidian (Botryllus schlosseri) L'Etac, Sark, British Channel Islands.
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Alex Mustard / Slender sapsucking slug (Thuridilla gracilis) on surface of Royal seasquirt (Polycarpa aurata) Aljui Bay, Waigeo Island, Raja Ampat, West Papua, Indonesia. Tropical West Pacific Ocean.
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Solvin Zankl / Rich reef landscape with Ox heart ascidian (Polycarpa aurata) and Reef fish, Raja Ampat, West Papua, Indonesia, Pacific Ocean.
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Solvin Zankl / Ox heart ascidian (Polycarpa aurata) Raja Ampat, West Papua, Indonesia, Pacific Ocean.
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Chris Newbert / Ink-spot Ascidian (Polycarpa aurata) tunicate, Indonesia
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Fred Bavendam / Gorgonian Coral (Calcigorgia spiculifera) amidst Taylor's Colonial Tunicates (Metandrocarpa taylori), British Columbia, Canada
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Fred Bavendam / Ascidian (Botrylloides magnicoecum) group, Jervis Bay, New South Wales, Australia
