December 16, 2025 at 4:32 PM
It is also evidently #ctenophoreTuesday (shouldn't that be ctuesday?) and I love me some comb jellies, even if I could rarely get good pics of 'em. This is from Monterey.
December 16, 2025 at 6:08 PM
It is also evidently #ctenophoreTuesday (shouldn't that be ctuesday?) and I love me some comb jellies, even if I could rarely get good pics of 'em. This is from Monterey.
December 16, 2025 at 4:28 PM
Happy Ctenophore day! Its a perfect day to celebrate such a small yet beautifully diverse phyla that comes in a wide array of shapes and colors. #Ctenophoreday
December 16, 2025 at 11:19 PM
Stunning yellow comb jelly from the #okeanos Stepping Stones in the Atlantic expedition a few years ago! #ctenophore youtu.be/89XHUT_T5eI?...
North Atlantic Stepping Stones: Bloody Belly Ctenophore
YouTube video by Global Foundation For Ocean Exploration
youtu.be
December 16, 2025 at 4:32 PM
#ctenophoretuesday Beroe!
A survey for Ctenophore Ctuesday:
* What way is this comb jelly swimming? Up or Down?
🧪🦑🤷♂️🌊🤿
* What way is this comb jelly swimming? Up or Down?
🧪🦑🤷♂️🌊🤿
![A pinkish, translucent, roughly bell-shaped jelly on a black background. Iridescent and red vertical stripe run down its tapered body. The top comes to a point, and the bottom is slightly flared. Upon close inspection, you can see little grape-like clusters of gonads next to the vertical stripes, which are the comb rows and main canals.
This [relatively] massive Beroe was observed on a blue-water scuba dive off California. It is 18cm (7 inches) long. Photo: S.Haddock ©MBARI 2025
Fun faCT: If you look closely, you can see the reproductive cells on both sides of the canals. Viewed from the end, rather than the side, the female eggs develop next to the major body axis (like North, S, E, W), and male cells develop on the sides of the canal that are 45° off from the axes (NorthEast, SE, SW, NW). So here you can see 2 sets of eggs, and 4 sets of male gonads.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:funpixcztysgcgvutfyjabnl/bafkreihzme4m42oopw2rfdb7aerfad2nwu3vmg2nggav5fhulfewam5on4)
December 16, 2025 at 4:30 PM
#ctenophoretuesday Beroe!
Two of these Coeloplana bottom comb jellies front and center on the surface of this Linckia sea star! #ctenophoreTuesday www.inaturalist.org/observations...
Creeping Comb Jelly (Coeloplana astericola)
Creeping Comb Jelly from Mabini, Batangas, Philippines on April 29, 2024 at 03:36 PM by Robin Gwen Agarwal. Site: Sun View Peri Paleracio and Romnick Baillo
www.inaturalist.org
November 26, 2024 at 6:30 PM
Two of these Coeloplana bottom comb jellies front and center on the surface of this Linckia sea star! #ctenophoreTuesday www.inaturalist.org/observations...
Our brief report on a remarkable feature of #ctenophores out now in PNAS: Reverse development in the ctenophore Mnemiopsis. We show that Mnemiopsis is capable of reversal from mature lobate to early cydippid🤩. @MSarsCentre @UiB #rejuvenation
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
December 16, 2025 at 11:16 PM
December 16, 2025 at 4:30 PM
Black cydippid cteno. I don't see black ctenos too often
@schmidtocean.bsky.social dive 854 #uruguaysub200 #MarineLife
@schmidtocean.bsky.social dive 854 #uruguaysub200 #MarineLife
December 16, 2025 at 11:16 PM
December 16, 2025 at 4:27 PM
yoooo it’s #CtenophoreDay? there are some real weird ones in the cydippida family, this is aulacoctena, from @mbarinews.bsky.social:
December 16, 2025 at 11:17 PM
December 16, 2025 at 11:17 PM
December 16, 2025 at 4:28 PM
This is a lovely shot of the bottom comb jelly Coeloplana astericola (8 of them) on this Echinaster star-the flat bobby bits are the jellies- with the white filaments on them? those are feeding tentacles! #CtenophoreTuesday www.inaturalist.org/observations...
Creeping Comb Jelly (Coeloplana astericola)
Creeping Comb Jelly from Karang Asem, ID-BA, ID on March 8, 2024 at 03:56 PM by martyhing. seastar was covered in these flatworms.
www.inaturalist.org
November 26, 2024 at 6:32 PM
This is a lovely shot of the bottom comb jelly Coeloplana astericola (8 of them) on this Echinaster star-the flat bobby bits are the jellies- with the white filaments on them? those are feeding tentacles! #CtenophoreTuesday www.inaturalist.org/observations...
For #CtenophoreDay an experience so extraordinary & exquisite if I hadn't captured it on camera I'd have thought it was a dream. Last month, heading into the sunset at end of #MySwim at Shimoda, found myself in a vast raft of ?Mikado Comb Jellies (Bolinopsis mikado) #cilia #CtenoTakeover #Japan🧵1/6
December 16, 2025 at 4:23 PM
Another example of this sea star, Echinaster practically FESTOONED with comb jellies (genus Coeloplana) about 20 of them. All those flat blobby bits with tentacles coming off them! #ctenophoreTuesday www.inaturalist.org/observations...
Genus Coeloplana
Coeloplana from PJ64+3C5, Tulamben, Kubu, Karangasem Regency, Bali 80852, Indonesia on April 11, 2024 at 10:28 AM by jopabinia
www.inaturalist.org
November 26, 2024 at 6:29 PM
Another example of this sea star, Echinaster practically FESTOONED with comb jellies (genus Coeloplana) about 20 of them. All those flat blobby bits with tentacles coming off them! #ctenophoreTuesday www.inaturalist.org/observations...
I love a good, curt genus name! LAMPEA! #ctenophoreTuesday www.inaturalist.org/observations...
Genus Lampea
Lampea from Sharks Tooth East on September 21, 2022 at 09:17 AM by Luca Davenport-Thomas. This same beroe with tentacles? Pretty ambitious little guy. ~1cm long
www.inaturalist.org
December 16, 2025 at 3:59 PM
I love a good, curt genus name! LAMPEA! #ctenophoreTuesday www.inaturalist.org/observations...
LOVE the names of these! BATHOCYROE! #ctenophoreTuesday www.inaturalist.org/observations...
Bathocyroe paragaster
Bathocyroe paragaster from Breaker Bay Rocks on November 21, 2025 at 05:57 PM by Luca Davenport-Thomas. A few in the plankton. One was being eaten by a Rosacea siphonophore.
www.inaturalist.org
December 16, 2025 at 3:55 PM
LOVE the names of these! BATHOCYROE! #ctenophoreTuesday www.inaturalist.org/observations...
whoa! more Redspot comb jelly love! #newzealand #ctenophoreTuesday www.inaturalist.org/observations...
Redspot Comb Jelly (Eurhamphaea vexilligera)
Redspot Comb Jelly from Breaker Bay Rocks on November 21, 2025 at 05:36 PM by Luca Davenport-Thomas. A few in the plankton.
www.inaturalist.org
December 16, 2025 at 4:07 PM
whoa! more Redspot comb jelly love! #newzealand #ctenophoreTuesday www.inaturalist.org/observations...
Hey 🧪 I am so sorry I am late to Ctenophore Day! How are we celebrating? Is there a #CtenoTakeover in progress? a beautiful Callianira from Antarctica
December 16, 2025 at 11:17 PM
I saw four species of ctenophore last night. Tried to hold out for a feather boa cydippid or Beroe but my neck was not taking it any longer. Maybe today.
Dryodora glandiformis
Bolinopsis microptera
Euplokamis dunlapae
Pleurobrachia bachei
Dryodora glandiformis
Bolinopsis microptera
Euplokamis dunlapae
Pleurobrachia bachei
December 16, 2025 at 11:16 PM
Just a few of the ctenophores from the past two nights:
1 - Feather Boa Cydippid (my common name for this species, description in progress by CE Mills)
2 - Dryodora glandiformis
3 - Euplokamis dunlapae
4 - not sure… super tiny. Thoughts welcome.
🦑🐙
1 - Feather Boa Cydippid (my common name for this species, description in progress by CE Mills)
2 - Dryodora glandiformis
3 - Euplokamis dunlapae
4 - not sure… super tiny. Thoughts welcome.
🦑🐙
December 16, 2025 at 11:16 PM
December 16, 2025 at 11:15 PM