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Worldbuilding Ecosystems Vol. 1
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Eco-September

Hello everyone! In September 2025, I will be trialing a challenge I plan to set myself for the entirety of 2026 - Ecology26. It's a spin-off of Galaxy24, a challenge I participated in during 2024, but sadly only achieved half of.

Next year, I will be fleshing out a single habitat's ecosystem, by writing a paragraph about a new species each day, turning one of those species into a full article each week. I believe Galaxy24 is one of the reasons as to why I had such a successful first half of 2024, and why I enjoyed worldbuilding so much then. So, I want to recapture that a bit!

This September I will be attempting to create 30 new species, with at least 4 full articles, fleshing out a habitat. I've yet to pick which habitat, but I've asked some friends what they think, and I will pick the most popular option.

If you'd like to do something similar to this, go ahead, I encourage you! Please let me know so I can cheer you on! But to be clear, this is not an unofficial challenge, just a page to document a personal project of mine.


After a couple of polls, it has been determined I will be fleshing out the coral reefs of Hothiri! This planet has recently been overhauled and I have been dying to work on it again, so it all worked out!

Hothiri Header
Hothiri Header by Mochi

Day 1: Chromatic Plateau Coral

Info

Scientific Name: Gratiospinus arcumensas
Average Lifespan: 10,000 years
Average Size: Up to 5sq km

A gigantic coral species that serves as the infrastructure of these coral reefs. They shimmer in the sunlight, absorbing magical energy. Remove this species, and all coral reefs cease to exist.

Early Kannvas Oil operations involved removing large chunks of chromatic plateau coral, destroying massive ecosystems that haven't yet recovered.

Day 2: Hothirian Pompom Crab

Info

Scientific Name: Lybia hothirii
Average Lifespan: 2 - 4 years
Average Size: 2 inches (including legs)

Hothirian pompom crabs carry tiny sea anemones in their claws. They sing and dance too, waving their arms around and snapping with their open claws.

They gather in groups to dance in large circles. A group of crabs is known as a choir. They are rainbow in colour with deep purple claws.

Day 3: Robber Damsel

Info

Scientific Name: Amblyglyphidodon diripia
Average Lifespan: 5 years
Average Length: 10cm

Robber damsels are fierce creatures known to steal anemones from hothirian pompom crabs. These angry fish try their hardest to fight larger creatures, to no avail.

These fish mate for life. They form strong bonds with their partners, and when one dies, the other attaches itself to the other using a mucus gathered from sea anemones. They are a blue and yellow, with black spots running down their side.

Day 4: Pink Slenderworm

Info

Scientific Name: Calumarina eleganta
Average Lifespan: 5 years
Average Length: 6 metres
 

The pink slenderworm is part of a very small family of siphonophores. These bioluminescent colonial creatures are completely harmless, and are important in distributing plankton in the coral reef ecosystem.

Pink Slenderworm by Mochi

Day 5: Pistol Toad

Pistol toads are a giant marine amphibian. They stalk the reefs, firing a giant tongue at prey. The speed of this tongue creates a sonic blast and heats a surrounding pocket of water to more than 5,500 degrees Celsius.

They are one of few marine amphibian species, with an added layer of skin that filters out salt to keep the animal from dehydrating. This skin is also studded with osteoderms, to protect from even larger predators. At a glance, it is easy to mistake a pistol toad for a reptile.

Day 6: Echoveil Clam

Info

Scientific Name: Tridacna melodia
Average Lifespan: 50 - 400 years
Average Width: 1 metre

The snaps and claps of this clam create pockets of sound that echo through the reefs. They are solitary creatures, buried in the crystalline sand. Dead clams help support these giant reefs, the husks providing small fish and crustaceans with a safe place to hide from predators.

The melodious echoes produced by these clams helps create a magical veil around these reefs. These veils haven't been studied much, but a few local sorcerers suspect these veils drive away malevolent spirits from the deep, open ocean.

Day 7: Angelinafish

Info

Scientific Name: Auracanthus tricolor
Average Lifespan: 5 - 6 years
Average Length: 40 - 45 cm

Angelinafish are cousins of marine angelfish. With their bristle teeth, angelinafish grind down and consume soft sponges and corals.

A single angelinafish lays up to a hundred million eggs in a single season. These fish are commonly kept in aquariums around the factories on Hothiri. They enjoy following people as they walk past the glass, making sharp clicking noises to attract attention.

Day 8: Acquis Eel

These giant eels are fairly passive, prowling the reefs in search of just one specific prey item - prospis turtles. Acquis eels grow to lengths of almost nine metres, with a black and white colour pattern they are hard to miss in the kaleidoscopic waters.

Despite their size they are elusive, and hard to come by. The average person on Hothiri will never see one in their entire life.

Day 9: Aranoni

Small cetaceans that inhabit shallow waters around coral reefs. They are a gregarious species, always chirping as they swim alongside family and friends.

Day 10: Gallant

Gallants are large horses designed for marine life. While they live and rest on Iroquet, they spend days around the reefs, using their fin-like front legs to power through the soft currents.

Gallants are considered pests to the organisations bound to Hothiri, for they provode quite a nuisance and can be particularly destructive.

Day 11: Waveback

Wavebacks are large friendly rays. It is against the law to hunt these precious animals. They are easy to spot, with their vibrant blue and black colouration. Wavebacks glide across the reefs, swimming up to submersibles and swimmers.

Day 12: Prospis Turtle

Vibrant purple and pink turtles. They are very flat and glide effortlessly between coral structures, dodging acquis eels.

Goal
  • 32 new species
  • 4 new articles
  • Moderately fleshed out ecosystem
  • Handful of drawings
  • Related Articles

    Hothiri
    Geographic Location | Jun 30, 2025

    A large oceanic planet owned by Karkhala and the oanie. It is being stripped of all its resources.

    Kannvas Oil
    Organization | May 29, 2025

    An oil mining and refining company based on Hothiri. Kannvas Oil has had a troubled history of neglecting its workers.



    Cover image: Hothiri Header by Mochi

    Comments

    Please Login in order to comment!
    Aug 28, 2025 01:16

    WOO!

    Fly high, Guardian. o7
    — Nulcheck
    Aug 28, 2025 12:02 by Mochi

    WOOHOOO

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    I hope you have a great day!   Explore the endless planets brimming with life of the Yonderverse! Go after creatures, discover new places, and learn about the people you find along the way. While you're at it, come visit the A to Zoo, the Yonderverse's largest zoo!   Come prep for WorldEmber with me!
    Aug 28, 2025 01:40 by Asmod

    Go you. So how will you store the 250 ecology entries that dont full article?

    Aug 28, 2025 01:41 by Asmod

    313

    Aug 28, 2025 12:03 by Mochi

    I will have one big article to store each species! I'll probably write just a paragraph or two each day, then maybe at the end of a year create a big food web to display all of the creatures! :D

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    I hope you have a great day!   Explore the endless planets brimming with life of the Yonderverse! Go after creatures, discover new places, and learn about the people you find along the way. While you're at it, come visit the A to Zoo, the Yonderverse's largest zoo!   Come prep for WorldEmber with me!
    Aug 28, 2025 04:18

    Sounds like a fun project!

    Come see my worlds: The Million Islands, High Albion, and Arborea
    Aug 28, 2025 12:04 by Mochi

    Thank you, I'm really excited about it!

    I'm a Comment Caroler! Click to learn more
    I hope you have a great day!   Explore the endless planets brimming with life of the Yonderverse! Go after creatures, discover new places, and learn about the people you find along the way. While you're at it, come visit the A to Zoo, the Yonderverse's largest zoo!   Come prep for WorldEmber with me!
    Aug 31, 2025 21:13 by Owen Davies

    Ooooh! I'm so excited about this! Might have to join too!

    Nonvyrox A fantasy setting scarred by a divine war.   Check out my articles from Summer Camp 2025!!
    Sep 1, 2025 09:34 by Mochi

    I hope you do! :D

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    I hope you have a great day!   Explore the endless planets brimming with life of the Yonderverse! Go after creatures, discover new places, and learn about the people you find along the way. While you're at it, come visit the A to Zoo, the Yonderverse's largest zoo!   Come prep for WorldEmber with me!
    Sep 1, 2025 10:45 by CoolG

    Sounds like a fun challenge! Have fun! :D

    Explore the dark and mysterious Inferncenem, the bright and wonderful Caelumen, the dark but magical Ysteria, the vibrant and bustling Auxul or the world of contrasts Mytharae!   Have a good one!   WorldEmber 2025 is upon us! Check out my progress!
    Sep 12, 2025 21:08 by Mochi

    Thank you so much! <3

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    I hope you have a great day!   Explore the endless planets brimming with life of the Yonderverse! Go after creatures, discover new places, and learn about the people you find along the way. While you're at it, come visit the A to Zoo, the Yonderverse's largest zoo!   Come prep for WorldEmber with me!
    Sep 1, 2025 12:49 by Dr Emily Vair-Turnbull

    So excited for this!

    Emy x
    Explore Etrea | WorldEmber 2025
    Sep 12, 2025 21:08 by Mochi

    I hope you enjoy what I make! :D

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    I hope you have a great day!   Explore the endless planets brimming with life of the Yonderverse! Go after creatures, discover new places, and learn about the people you find along the way. While you're at it, come visit the A to Zoo, the Yonderverse's largest zoo!   Come prep for WorldEmber with me!
    Sep 1, 2025 14:05 by Keon Croucher

    So begins the....preview? practice? Preview feels better, the Preview run!! I'll need to remember to pop by this one to read the new paragraphs through the month :D Good luck Mochi, I'm sure you'll flesh out quite an ecosystem by the end of this! Can't wait to see how it comes together!

    Keon Croucher, Chronicler of the Age of Revitalization
    Sep 14, 2025 08:12 by Mochi

    Thank you so much! I'm excited to see where this goes, and it's definitely helping me how to make Ecology26 easier :D

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    Sep 16, 2025 16:20

    Great idea, I'm keeping my fingers crossed that you succeed. There are already some wonderful creatures involved.

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    Dive with me into the depths of the oceans and see what I have prepared for Worldember.
    Here are my Entries for the water continent Ulűri̋qi̋
    .
    Sep 20, 2025 14:32 by Mochi

    Thank you! I really ought to catch up, I will try my best to finish this before September ends :D

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    I hope you have a great day!   Explore the endless planets brimming with life of the Yonderverse! Go after creatures, discover new places, and learn about the people you find along the way. While you're at it, come visit the A to Zoo, the Yonderverse's largest zoo!   Come prep for WorldEmber with me!
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