"Sea cucumber NOT SD NOT HD"

Group of butterflyfish and wrasse feed on sticky filaments ejected by sea cucumber in defence

Sea cucumber at night stretches up and spawns

Macro shot of a sea cucumber feeding itself with its tentacles

Macro shot of a sea cucumber feeding itself with its tentacles

WS anus of a sea cucumber opening and closing

ECU anus of a sea cucumber opening and closing

ECU anus of a sea cucumber opening and closing

Stressed sea cucumber crawling over coral

Wrasse and other tropical fishes swimming in and around growth of staghorn coral

Wrasse predating on sea cucumber

Large spikey sea cucumber moving over coral reef

Large spikey sea cucumber moving over coral reef

Large spikey sea cucumber moving over coral reef

Sea cucumber at night raises its head getting ready to spawn and reproduce

Sea cucumber at night raises its head getting ready to spawn and reproduce

Sea cucumber at night raises its head getting ready to spawn and reproduce

Graeff's Sea Cucumber standing vertically and spawning

Graeff's Sea Cucumber standing vertically and spawning

Graeff's Sea Cucumber standing vertically and spawning

Macro shot of a sea cucumber feeding itself with its tentacles