#Worms

[ratinf3stedwallz]

Micheal the distortion

explain your gender in 10 words or less without using boring words like “male”, “female”, “nonbinary”, “masculine”, “feminine” or “androgynous”.

go!

[bethanythebogwitch]

Wet Beast Wednesday: Christmas tree worm

Merry Christmas from the ocean! For this festive occasion, I’ve chosen to cover an animal that certainly has the spirit of the season. The Christmas tree worm is the person who keeps their Christmas lights up all year of the sea and today we’re going to see what makes them tick.

(Image: the crown of a Christmas tree worm. It appears as two stalks emerging from amongst coral polyps. Small feathery, appendages emerge from the stalks in a spiral formation going up them. They are yellow, with brown tips. A smaller, round structure is near the base of the trees. End ID)

The Christmas tree worm (Spirobranchus giganteus) is a polychaete worm of the tube-building fan worm clade Sabellida. While they are called giganteus, that’s only relative to other fan worms as they max out at about 3.8 cm (1.5 in) long. Being tube worms, they build a tube of calcium carbonate that they live in. This tube provides protection for the worm, who can retreat into it if threatened by predators. Polychaetes are defined by the paired bristle-like chaetes on each body segment, which are often used for locomotion. Tube worms like the Christmas tree worm lack these kind of locomotive appendages as they spend their entire lives in their tubes.

I couldn't find a full-body picture of a Christmas tree worm outside of its tube, so this is the best you get. (Image: Serpula vermicularis, a member of the same family of tube worms as the Christmas tree worm, removed from its tube. It is a short, segmented worm with a plug on a stalk and a crown consisting of long, feathery tentacles arranged differently than those of a Christmas tree worm. End ID)

The feature that gives these worms their common name is a pair of feathery, spiraling structures that emerge from the head and look quite a bit like tiny, colorful fir trees. These structures, called crowns, are heavily modified version of mouth appendages called prostomial palps. The feathery bits are tentacles called radioles. The crown is usually the only part of the worm visible, with the rest of its body safely in the tube. The crown is used both for feeding and respiration, as it can perform gas exchange with the water like gills. Christmas tree worms, like other fan worms, are filter feeders. They expose their crows to the water and wait for edible plankton and bits or organic detritus to get caught by the radioles. Cilia then transports the food down to the mouth. Christmas tree worms have a modified radiole called an operculum that acts like a lid to the front of the tube, closing it off when the worm retreats. The crown also has light-sensing structures, allowing it to detect light and shadow. The visual capabilities of these eye spots is poorly studied. The crown makes up about a third of the body length and can come in a wide variety of colors. It can regenerate if damaged.

(Image: a blue-crowned Christmas tree worm emerging from yellow coral. End ID)

Christmas tree worms are found across most of the world, from the Caribbean to the Indo-Pacific, in tropical waters. They are coral reef dwellers who live in burrows built into had corals. Brain coral species are their preferred hosts, but they can live on other corals and have been reported living in sponges and on giant clams. Christmas tree worms certainly have a symbiotic relationship with the corals, it's debatable whether that relationship is parasitic, commensal, or mutualistic. They may damage nearby polyps and could spread harmful algae (that seems to be an open question), but I found sources suggesting they improve water flow around the coral, which could benefit it. When they sense a threat, the worms will rapidly retract into their tubes. Some time later (which can be seconds to minutes), they will cautiously emerge again. Worms living on crowded corals seem to be more timid, taking longer to emerge again. Christmas tree worms are broadcast spawners who release their gametes into the water. Fertilized eggs hatch quickly into larvae who must find their way to a coral and start their burrow. Christmas tree worms can live up to 30 years.

(GIF: a bright yellow Christmas tree worm retracting into its tube. The full retraction takes less than a second and leaves only a hole covered by the operculum. End ID)

Christmas tree worms are considered to have a stable population, but as they are dependent on corals, threats to reefs are threats to them. Thus, global climate change is a major threat to their survival. Predators of the worms include fish, starfish, and other worms. They are not of commercial interest to humans, but are popular among divers and have entered the aquarium trade.

(Image: multiple Christmas tree worms of various colors emerging from a coral. End ID)

[the-jane-prentiss]

mEr. Ry ChrI. StMas

m. ErrY Chris.tMas t o a. LL ❤️❤️❤️❤️❤️

[euclydya]

@couchie

Puerto Rican velvet worm, Peripatus juanensis, Peripatidae

Photographed in Puerto Rico by wesgapp

[inbabylontheywept]

my grandpa was a good man. and it really wasnt his fault - recreationally lying to kids is a proud family tradition - but he told me, once, that cutting a worm in half resulted in two worms.

i think he said it so i'd be more morally okay with fishing? i actually dont remember the context.

point was, he told me this, and he understimated (by a very large margin) how much i liked worms. i was a worm boy. very wormy. and after hearing that, i went home, and i dug through the garden, flipped over every rock, did everything i could to gather as many worms as i could, and then i uh.

i cut them all in half. every worm i could find. all of them. with scissors.

i then took this pile of split worms, and i put them in a box with a bit of lettuce and some water and stuff and went to bed expecting to double my worms overnight. i have math autism, so i had a vague understanding that if i did this just a few times in a row, i would eventually have a completely unreasonable amount of worms.

i was very excited to become this plane's worm emperor.

(i think i was...six?)

anyway, i did not become the inheritor of the worm crown. i instead woke up to a box of dead worms and cried. a lot. i got diagnosed with panic attacks as a teenager, but i think i had them as a kid, i just had no idea what they were. i was kind of processing that a.) i had killed what i had assumed was every single worm in my yard, and thus would have no more worms, and b). i was going to like, worm hell.

(six year babylon spent a lot of time worrying about god.)

so i kind of freaked out, and i climbed a tree, because god can only smite you if you're touching the ground (?) and i sat up there mostly inconsolable until my mom came out and asked, hey, what's up? what happened?

so i explained to her that i had killed all of the worms, forever, and was also Damned, and she took me to the compost pile, and we dug for all of five seconds and found like twenty more worms.

the compost pile was full of worms.

she then told me that a). there were more worms, and we could put them back under rocks and stuff and recolonize our yard and b). that one day, i would die, and go to heaven, and be able to talk to the worms face to face. that i'd be able to tell them all that i was very sorry, and that i killed them on accident, driven only by excessive Love, and that she was positive they would forgive me because worms have six hearts and no malice.

at that point, i think i was sixty percent tear-snot by weight, and i had no choice but to gather enough worms that i could hug them. which my mom helped with. and then after that she helped me put some worms back under each rock.

and for my epilogue: i spent a significant portion of my childhood in trees. and for many years after, even when my mom didnt know i was watching, i would catch her giving the space under the rocks a light spritz with the hose. not because she loved worms.

but because she loved me.

[stevejgarza]

Wizard worm just emerged from a wizarding hole! Lucky you!!!✨🪱🪄🍀

[saewokhrisz]

39

[sonotcoolmax]

watercolor beanie babies, spring 2024

[goblinfables]

pick your poison

[389]

A Girl’s Best Friend by Margot Quan Knight, 2002

[plaguedocboi]

May we have a wormse? Please?

ouppy

[treasuregamble]

dirt cups

1, 2, 3

[fantasyfawnart]

The party bugs have become PATCHES!!! These will be in my shop update on 8/30 :)