Ctenophores have got to be one of the most under rated denizens of the Jersey Shore. Rainbows by day, glow sticks by night. Why is everyone not hyping the ctenophore?!
Ctenophores are mysterious ocean drifters. They are extremely diverse, living from the equator to the poles and from the ocean surface to more than 7,000 meters, or more than four miles, down. Colorful, translucent, and delicate, these predators glide through ocean waters capturing other animals, typically using their long, sticky tentacles.
Scientists have described more than 200 ctenophore species. They come in an assortment of shapes, sizes, colors, and patterns. Some are small, while others can be quite large—growing larger than a football. All play an integral role in ocean ecosystems.
Ctenophores are more commonly known as Comb jellies, are marine invertebrates and resemble Cnidarians with a few notable similarities. Such as, lacking true organs, being mostly water, hollow gut, carnivorous behavior, tentacles, and are both diploblastic (having a body w/ only two embryonic layers). Many differences too though, like all cnidarians have stinging cells in their tentacles called nematocysts or cnidocytes (even if their stinging power isn’t always strong) but ctenophora have tentacles lined with sticky cells (colloblasts) so that they can catch prey. They also have different body shapes, Cnidarians that we consider jellyfish are radially symmetrical but Ctenophora are biradially symmetrical.
They are argued by some to be sister groups or even closely related but honestly jellyfish are closer to sea anemone than comb jellies based on our current evidence.
A pretty pink color offers clever camouflage for the abyssal comb jelly
The abyssal comb jelly (Beroe abyssicola) patrols the midnight zone searching for its favorite food—other comb jellies. But this predator prowls in dark depths, where most animals can produce bioluminescence. A glowing gut would invite the attention of other predators. The crimson color of this comb jelly’s stomach absorbs the light produced by bioluminescent prey.
MBARI researchers have learned that gelatinous animals like Beroe have a large impact on deep-sea food webs. Our archive of nearly 28,000 hours of deep-sea video contains hundreds of observations of deep-sea animals feeding. Examining these observations in detail revealed that jellies, comb jellies, and siphonophores are important as both predators and prey in the ocean’s midnight zone.
My name is Jamie, and my name is a pun about ctenophores, which are not jellyfish. The ctenophores pictured above are the likely sister taxa to all other animals, branching off the evolutionary tree before even sponges. They'd have independently developed nerves and muscle. The pinks ones here are sort of cannibals - they eat other ctenophores by swallowing them whole.
I'm taking a chance blazing this post because I want more people to know about and appreciate ctenophores, and because I'm also starting from scratch here after years away and am hoping to find community and an audience for my work.
I'm a disabled queer marine scientist currently looking for accessible work and selling my photography and embroidery to try and cover medical bills in the meantime. If you are a fellow creative and/or ocean enthusiast, I would love if you said hi. I so appreciate anyone checking out or sharing my work:
Art Prints: https://www.inprnt.com/gallery/noncompliantcyborg/