No clear reason? It's because the thing can successfully make more of itself before dying. That's literally it.

See also: ticks

Has no organs

Looks inside...

...organs.

It truly has one hole, in that it eats, has a digestive sack, and then vomits the poop

https://en.wikipedia.org/wiki/Xenoturbella

Exist for no reason? All life has a purpose, and that is to poop. The excrement speaks for itself.

"existing for no clear reason"

So like every other life form we know of?

I don't think any natural thing exists for a reason. That's reserved for things made or at least caused by sentient beings.

exists for no clear reason

Sounds like Humans

It's the roomba of the sea

So from the wiki

The monophyly of Xenacoelomorpha soon became established, but its position as either a basal bilaterian clade or a deuterostome remained unresolved until 2016, when two new studies, with increased gene and taxon sampling, again placed Xenoturbella as the sister group of Acoelomorpha within Xenacoelomorpha, and placed Xenacoelomorpha as sister to Nephrozoa (Protostomia plus Deuterostomia), and therefore the basalmost bilaterian phylum<

Seems like "where on the tree of life" is "the first bilaterals" which makes sense. They seem very worm-like in bodyplan. Shit from the Pre-Cambrian can look pretty alien and have shaky relationships to more derived species.

The universe is a chain of cause and effect, and the only way to interpret "a reason" for something without introducing artificial human constructs of morality, is "what caused it?". The process of evolution caused this.

Would.

Scientists do love to talk about worms

This has some details: https://en.wikipedia.org/wiki/Xenacoelomorpha?wprov=sfti1#Phylogenetics

It looks like they do get new openings on the surface that excrete eggs and sperm.

Imagine scientists declaring that you are not interesting enough to be technically alive and you have been officially kicked out.

It eats.

It is thus the primordial consumer.

... kinda does bare a resemblance to what AM turns Ted into...

The ocean's condom.

If it has at least one hole, then it exists for a reason. ;)

You found a MAGA voter

it doesn't even have a hole in the sense that it's for an entrance and exit as a single hole through.

it's literally just a cavity, like a trench

Sounds like the pinnacle of evolution.

recently the phylogenetic studies place this with another unusual bilaterian animal( very basal animals(Post-sponge creatures), they couldnt figure out which things this is related to.

Ah, found reddit mods!