Georgette Douwma / Colonial anemones (Amphianthus nitidus) with Green urn sea squirts (Didemnum molle) (Atriolum robustum). Lembeh Strait, North Sulawesi, Indonesia.

Michael D. Kern / Columbian Giant Redleg Tarantula, (Megaphobema robustum) ventral view, captive from South America

Jurgen Freund / Tunicates / Ascidians / Sea squirts (Atriolum robustum) on a fan coral branch. Misool, Raja Ampat, West Papua, Indonesia.

Michael & Patricia Fogden / Elephant Ears (Xanthosoma robustum) and bamboo in cloud forest, Monteverde Cloud Forest Reserve, Costa Rica

Andy Sands / Slime mould (Physarum robustum), in mature reproductive phase. Close-up of erupted fruiting bodies (sporangia), bearing thousands of spores. UK. The much smaller fruiting bodies in the bottom of the f...

Andy Sands / Slime mould (Physarum robustum), in mature reproductive phase. Close-up of erupted fruiting body (sporangium), bearing thousands of spores. Buckinghamshire, UK.

Andy Sands / Slime mould (Physarum robustum), in mature reproductive phase. Close-up of erupting fruiting body (sporangium), bearing thousands of spores. Buckinghamshire, UK.

Andy Sands / Slime mould (Physarum robustum), in reproductive phase. Close-up of fruiting body (sporangium), bearing thousands of spores. Buckinghamshire, UK.

Andy Sands / Slime mould (Physarum robustum), in mature reproductive phase. Close-up of erupted fruiting body (sporangium), bearing thousands of spores. Buckinghamshire, UK.

Georgette Douwma / Kaleidoscopic image of Sea squirts or tunicates - Clavelina sp. surrounded by Atriolum robustum. Raja Ampat, West Papua, Indonesia.

Georgette Douwma / Tunicate (Atriolum robustum) on a gorgonian coral. West Papua, Indonesia. Indo-West Pacific.

Alex Mustard / Nudibranchs (Nembrotha chamberlaini) feeding on Tunicates (sea squirt) on a coral reef. Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Tropical West Pacific Ocean..

Daniel Heuclin / Columbian red-leg tarantula (Megaphobema robusta) captive, occurs in Columbia

Daniel Heuclin / Columbian red-leg tarantula (Megaphobema robusta) captive, occurs in Columbia

Daniel Heuclin / Columbian red-leg tarantula (Megaphobema robusta) captive, occurs in Columbia

Daniel Heuclin / Columbian red-leg tarantula (Megaphobema robusta) on white background. Captive, occurs in Columbia

Daniel Heuclin / Columbian red-leg tarantula (Megaphobema robusta) on white background. Captive, occurs in Columbia

Daniel Heuclin / Columbian red-leg tarentula (Megaphobema robusta) captive, endemic to Columbia.

Daniel Heuclin / Columbian red-leg tarentula (Megaphobema robusta) captive, endemic to Columbia.

Daniel Heuclin / Columbian red-leg tarentula (Megaphobema robusta) captive, endemic to Columbia.

Daniel Heuclin / Columbian red-leg tarentula (Megaphobema robusta) in aggressive posture, captive, endemic to Columbia.

Georgette Douwma / Striped triplefin (Helcogramma striata) lying on Sea squirts (Atriolum robustum) Raja Ampat, West Papua, Indonesia

Michael D. Kern / Columbian Giant Redleg Tarantula, (Megaphobema robustum), captive from Colombia and Brazil

Jurgen Freund / Green urn sea squirt (Atriolum robustum) Moluccas Islands, Indonesia.

Jurgen Freund / Group of small Ascidians (Atriolum robustum). North Raja Ampat, West Papua, Indonesia.

Jurgen Freund / Green urn sea squirts / tunicates (Atriolum robustum) on a fan coral. Misool, Raja Ampat, West Papua, Indonesia.

Jurgen Freund / Tunicates / Sea squirts (Atriolum robustum) on a coral. Misool, Raja Ampat, West Papua, Indonesia..

Jurgen Freund / Lesser urn tunicates / ascidians / sea squirts (Atriolum robustum) North Raja Ampat, West Papua, Indonesia

Jurgen Freund / Colony of Lesser urn sea squirts / tunicates (Atriolum robustum) on hard coral. Misool, Raja Ampat, West Papua, Indonesia

Michael D. Kern / Columbian giant red leg tarantula {Megaphobema robustum} captive, from Columbia

David Shale / Columbian Giant Red Leg (Megaphobema robustum) from Columbia, captive

David Shale / Columbian Giant Red Leg spider (Megaphobema robustum) from Columbia, captive

David Shale / Columbian Giant Red Leg (Megaphobema robustum) from Columbia, captive

David Shale / Columbian Giant Red Leg (Megaphobema robustum) from Columbia, captive

Brandon Cole / Tunicates {Atriolum robustum} Indonesia.

Jurgen Freund / Tunicate {Rhopalea sp} with atriolum tunicates {Atriolum robustum} Indo Pacific

Georgette Douwma / Sea squirts {Atriolum robustum} living on 'fighting zone' between two corals. Sulawesi,

Georgette Douwma / Sea squirts {Atriolum robustum} and Red sea fan coral Moluccas, Indonesia

Georgette Douwma / Seasquirts (Rhopalaea crasssa) and (Atriolum robustum). Banda Island, Moluccas, Indonesia

Constantinos Petrinos / Colonial sea squirt colony (Atriolum robustum). Solomon Islands, Pacific