A Scallop shell encrusted with Keelworm (Spirobranchus triqueter) casings.
County Clare, Ireland.
County Clare, Ireland.
November 9, 2025 at 12:59 PM
A Scallop shell encrusted with Keelworm (Spirobranchus triqueter) casings.
County Clare, Ireland.
County Clare, Ireland.
A wee tangle of Keelworm (Spirobranchus triqueter) casings. Under and upper sides.
County Clare, Ireland.
Cormacscoast.com walking tours
County Clare, Ireland.
Cormacscoast.com walking tours
April 29, 2026 at 11:59 AM
A wee tangle of Keelworm (Spirobranchus triqueter) casings. Under and upper sides.
County Clare, Ireland.
Cormacscoast.com walking tours
County Clare, Ireland.
Cormacscoast.com walking tours
It's not Christmas time, but . . .
#MarineLife
#MarineLife
April 24, 2025 at 2:43 PM
It's not Christmas time, but . . .
#MarineLife
#MarineLife
✨Happy holidays to all! 🎄Christmas tree worms (Spirobranchus giganteus) in mustard hill coral (Porites astreoides). This coral shows notable genetic diversity and connectivity across its range, but such info for the worm species is sparse. #wormWednesday #reefmas 🪱🧬🦑🌎 🪸
December 25, 2024 at 11:07 PM
✨Happy holidays to all! 🎄Christmas tree worms (Spirobranchus giganteus) in mustard hill coral (Porites astreoides). This coral shows notable genetic diversity and connectivity across its range, but such info for the worm species is sparse. #wormWednesday #reefmas 🪱🧬🦑🌎 🪸
Today’s feature is a really funny creature, the Christmas Tree Worm or Spirobranchus giganteus. Loving the different colours. #photography #underwaterphotography #fiji #savasiisland #savasiislandresort #scuba #scubadiving #christmastreeworm #marinelife #wildlife
February 3, 2025 at 3:21 AM
Today’s feature is a really funny creature, the Christmas Tree Worm or Spirobranchus giganteus. Loving the different colours. #photography #underwaterphotography #fiji #savasiisland #savasiislandresort #scuba #scubadiving #christmastreeworm #marinelife #wildlife
A tangle of Keelworm (Spirobranchus triqueter) casings. These are the protective calcareous tubes that Keelworms build and inhabit on rocky or hard surfaces. These ones have been abandoned and knocked loose from whatever surface they were once attached to.
County Donegal, Ireland.
County Donegal, Ireland.
September 28, 2025 at 11:27 AM
A tangle of Keelworm (Spirobranchus triqueter) casings. These are the protective calcareous tubes that Keelworms build and inhabit on rocky or hard surfaces. These ones have been abandoned and knocked loose from whatever surface they were once attached to.
County Donegal, Ireland.
County Donegal, Ireland.
A stone encrusted with Keelworm (Spirobranchus triqueter) casings. Keelworms are a type of polychaete worm that build protective calcareous tubes in which they live.
County Clare, Ireland.
County Clare, Ireland.
August 27, 2025 at 7:39 AM
A stone encrusted with Keelworm (Spirobranchus triqueter) casings. Keelworms are a type of polychaete worm that build protective calcareous tubes in which they live.
County Clare, Ireland.
County Clare, Ireland.
Keelworm (Spirobranchus triqueter) casings with Bryozoan sea matt encrusting them. The first pic is of the underside that is usually attached to rock or shell.
County Clare, Ireland.
County Clare, Ireland.
April 22, 2025 at 9:44 AM
Keelworm (Spirobranchus triqueter) casings with Bryozoan sea matt encrusting them. The first pic is of the underside that is usually attached to rock or shell.
County Clare, Ireland.
County Clare, Ireland.
#FluorescenceFriday showing asymmetrical beta-tubulin enrichment in the embryo of Spirobranchus lamarcki 🪱🪱🪱
#EvoDevo
#DevBio
#EvoDevo
#DevBio
October 3, 2025 at 6:19 PM
#FluorescenceFriday showing asymmetrical beta-tubulin enrichment in the embryo of Spirobranchus lamarcki 🪱🪱🪱
#EvoDevo
#DevBio
#EvoDevo
#DevBio
A tangle of Keelworm (Spirobranchus triqueter) casings. These protective calcareous tubes are formed, by a species of polychaete worm, usually on hard surfaces like rocks or shells - This one has been dislodged.
County Clare, Ireland.
County Clare, Ireland.
April 19, 2025 at 4:38 PM
A tangle of Keelworm (Spirobranchus triqueter) casings. These protective calcareous tubes are formed, by a species of polychaete worm, usually on hard surfaces like rocks or shells - This one has been dislodged.
County Clare, Ireland.
County Clare, Ireland.
#WormWednesday Spirobranchus serpulid cluster being collected by ROV from Sonne, somewhere (where?) off New Zealand/Aotearoa about 230m, dive 118, 13 Feb @marumuni629.bsky.social, @oceanhelen.bsky.social
February 12, 2025 at 10:46 PM
#WormWednesday Spirobranchus serpulid cluster being collected by ROV from Sonne, somewhere (where?) off New Zealand/Aotearoa about 230m, dive 118, 13 Feb @marumuni629.bsky.social, @oceanhelen.bsky.social
Merry Christmas to; Spirobranchus giganteus, the Christmas tree worm! Named for their bright colorful crowns that resemble artificial trees, these polychaetes live a sessile life boared into hard corals.
I'm super excited about these worms, so this will be a long thread!
I'm super excited about these worms, so this will be a long thread!
December 24, 2025 at 5:51 PM
Merry Christmas to; Spirobranchus giganteus, the Christmas tree worm! Named for their bright colorful crowns that resemble artificial trees, these polychaetes live a sessile life boared into hard corals.
I'm super excited about these worms, so this will be a long thread!
I'm super excited about these worms, so this will be a long thread!
#FluorescenceFriday
Back at the confocal with lots of larvae to image from this spawning season.
This a lateral view of the larva of Spirobranchus lamarcki from St Andrews, Scotland
#EvoDevo
#DevBio
Back at the confocal with lots of larvae to image from this spawning season.
This a lateral view of the larva of Spirobranchus lamarcki from St Andrews, Scotland
#EvoDevo
#DevBio
September 19, 2025 at 11:18 AM
#FluorescenceFriday
Back at the confocal with lots of larvae to image from this spawning season.
This a lateral view of the larva of Spirobranchus lamarcki from St Andrews, Scotland
#EvoDevo
#DevBio
Back at the confocal with lots of larvae to image from this spawning season.
This a lateral view of the larva of Spirobranchus lamarcki from St Andrews, Scotland
#EvoDevo
#DevBio
Spirobranchus giganteus, otherwise known as the Christmas Tree Worm, lives in coral reefs in the Caribbean and Indo-Pacific regions.
December 7, 2024 at 11:17 PM
Spirobranchus giganteus, otherwise known as the Christmas Tree Worm, lives in coral reefs in the Caribbean and Indo-Pacific regions.
Spirobranchus giganteus. Always appreciated them.
December 18, 2025 at 2:28 AM
Spirobranchus giganteus. Always appreciated them.
A Christmas tree worm (Spirobranchus giganteus).
Photo by Nick Hobgood (CC BY-SA 3.0 license).
#AquariumKids #Fishkeeping #Aquariums
Photo by Nick Hobgood (CC BY-SA 3.0 license).
#AquariumKids #Fishkeeping #Aquariums
August 29, 2024 at 3:27 PM
A Christmas tree worm (Spirobranchus giganteus).
Photo by Nick Hobgood (CC BY-SA 3.0 license).
#AquariumKids #Fishkeeping #Aquariums
Photo by Nick Hobgood (CC BY-SA 3.0 license).
#AquariumKids #Fishkeeping #Aquariums
Christmas tree worms - Spirobranchus giganteus
#gili #giliislands #lombok #singapore #diving #scuba #trawangan #diveandstay #giliair #weekend #ocean #sealife #marinelife #padi #reef #worms
#gili #giliislands #lombok #singapore #diving #scuba #trawangan #diveandstay #giliair #weekend #ocean #sealife #marinelife #padi #reef #worms
August 4, 2026 at 6:22 PM
Christmas tree worms - Spirobranchus giganteus
#gili #giliislands #lombok #singapore #diving #scuba #trawangan #diveandstay #giliair #weekend #ocean #sealife #marinelife #padi #reef #worms
#gili #giliislands #lombok #singapore #diving #scuba #trawangan #diveandstay #giliair #weekend #ocean #sealife #marinelife #padi #reef #worms
What could be more Christmas-y than a tube worm? Meet Spirobranchus giganteus, the Christmas Tree Worm.
It burrows into corals in tropical waters, adding to the protection offered by its calcareous tube.
The "Christmas trees" are mouth structures serving both feeding and respiration.
It burrows into corals in tropical waters, adding to the protection offered by its calcareous tube.
The "Christmas trees" are mouth structures serving both feeding and respiration.
December 23, 2023 at 10:30 PM
What could be more Christmas-y than a tube worm? Meet Spirobranchus giganteus, the Christmas Tree Worm.
It burrows into corals in tropical waters, adding to the protection offered by its calcareous tube.
The "Christmas trees" are mouth structures serving both feeding and respiration.
It burrows into corals in tropical waters, adding to the protection offered by its calcareous tube.
The "Christmas trees" are mouth structures serving both feeding and respiration.
I've never seen a green color morph, so this is the most Christmas-y christmas tree worm (Serpulidae: Spirobranchus giganteus) that I can find on my camera roll. Paired with these green zoanthids it *almost* does the job...
December 24, 2024 at 6:38 PM
I've never seen a green color morph, so this is the most Christmas-y christmas tree worm (Serpulidae: Spirobranchus giganteus) that I can find on my camera roll. Paired with these green zoanthids it *almost* does the job...
Meet Spirobranchus giganteus, the colorful Christmas tree worm! 🎄
These marine worms are famous for their spiral christmas tree-like gills.
They create underwater “forests” of beauty, enhancing coral reef health by filtering plankton and improving water quality!
Merry Christmas! 🌈 💙
#biodiful 🦑
These marine worms are famous for their spiral christmas tree-like gills.
They create underwater “forests” of beauty, enhancing coral reef health by filtering plankton and improving water quality!
Merry Christmas! 🌈 💙
#biodiful 🦑
December 23, 2024 at 12:37 PM
Meet Spirobranchus giganteus, the colorful Christmas tree worm! 🎄
These marine worms are famous for their spiral christmas tree-like gills.
They create underwater “forests” of beauty, enhancing coral reef health by filtering plankton and improving water quality!
Merry Christmas! 🌈 💙
#biodiful 🦑
These marine worms are famous for their spiral christmas tree-like gills.
They create underwater “forests” of beauty, enhancing coral reef health by filtering plankton and improving water quality!
Merry Christmas! 🌈 💙
#biodiful 🦑