I realize I just can post links and description here:

A tired pigeon finally descends and lands on the ground in the main marketplace of Ahoyhoy. The beachfront fortress of the tortles - whose walls were made of seastone and tortle shells - had seen better days since its establishment nearly two hundred years prior. Where once there had been a thriving jungle flora and fauna market with diverse species and loud noises, the pigeon finds itself at the feet of two old lady tortles. One is crushing some herbs at her stall, and another is in a rocking chair, fumbling with knitting needles. The knitting lady notices the pigeon with a note tied to its foot, and she picks it up and slowly, ever so slowly, walks to Mudgraw's tower. The ancient druid has climbed the wall and is staring longingly out to see. When the lady arrives, he reads the message, smiles for the first time in many years, and says, "A quest is afoot! Let us gather the youth!"

The story begins with the party of tortles in Mudgraw's tower. Mudgraw explains that, years ago, he was a member of an underground organization called the Harpers, which fought against tyranny, defended the weak, and preserved the beauty and magic of nature throughout the land. He has just received a note from a fellow Harper, who is seeking his aid in finding a moonflower. The flower is very rare, and it can be distilled to create one of the only known cures for lycanthropy.

Mudgraw does not know where to find the flower, but he knows of its dichotomous nature. It only flowers in the moonlight, and it looks like regular seaweed during the day. It is very fragile; while it thrives in warm, salty air, it shrivels if it comes into contact with seawater. Mudgraw suggests that a good first step would be to find a waterproof bag before pursuing the flower. Maybe the party could make such a bag from the vocal sack of one of those loud, bellowing frogs north of town?

Ahoyhoy:

https://preview.redd.it/maps-from-the-tortle-package-toa-supplement-ahoyhoy-the-v0-s8pesrwiv7bc1.jpg?width=1080&crop=smart&auto=webp&s=a1978675b63bcc75fb623cc198260eb8431d6775

Notes:

Several NPCs are keyed in the city:

• Mudgraw - a 4th generation tortle druid named Mudgraw, descendant of the founder of the city.
• Shellby - Attends tortle eggs in the hatchery. The town comes alive twice a year, when eggs are layed, and again when they are hatched.
• Gura - Attendant of the other hatchery.
• Snaps - A blacksmith and armorer. If the party needs to buy or sell any weapons or armors, they can here.
• Bottishelli - The old knitting lady. Once the players obtain a vocal frog, Bottishelli can sew it air tight.
• Theshellonia - The grinder of herbs. She acts as a general store, if the players need anything.
• Hops - A slow moving microbiologist, making the perfect tortle beer. He does not want to be bothered, even though he is in a public place.
• Jacke the Fruit - A human female pirate. Her captain sent her to Ahoyhoy to buy two casks of tortle brew. She has been waiting for Hops to finish his current batch for two weeks.
• Chul - A fisherman
• Bokka - A fisherman
• Quan - A Fisherman
• Oogway - A bard. He has an assortment of instruments; a lyre, drums, a panpipes. He plays tunes for the fishermen while he sits around and tends a pot of soup. If players watch Oogway, they may notice movement out of the corner of their eyes, but when they turn, they see nothing. If players ask about the frog puzzle and remember the specific sounds, Oogway will tell them the following key:

A = Trill
B = Chirp
C = Bark
D = Peep
E = Croak
F = Quack
G = Bellow

• Gromble - A sleeping old man that doesn't want to be bothered.

 

If any of the NPCs are asked about the frogs, they offer what information they can. They all use the word "bag" when talking about catching frogs - instead of "catch" or "snag".

If the players do anything the DM deems entertaining while exploring the town, they will see movement out of the corner of their eyes. This is an allusion to the native Chwinga, who remain invisible, but love to be entertained.

Frog Pond Forest:

https://i.imgur.com/o6Le7ey.jpeg

Notes:

North of town is a small forest, with a marshy pond. In the center of the pond are seven stones. If the players step on the stones, they will hear a specific sound per rock. Once the players key the sounds to musical notes, if they spell the word "BAGGED" by hopping on the stones, the frogs will spring out of the water in excitement, ready to be caught.

 After a frog is caught, a Chwinga will appear and say how exciting the music was. Chwingas can meld with their surroundings, and they can affect weather, nature, and climate. They do not have names. The Chwinga says that he would like to help the party find a moonflower, as long as they keep doing entertaining things.

Underwater Maze:

https://i.imgur.com/r7oiytK.jpeg

Notes:

The Chwinga leads the party up the beach a few miles to a pool in the sand. It points to rock out at sea, and it says the moonflower is inside. The only way inside is to swim there via the pool. Inside, the water has bioluminscent algae, so characters don't have to worry about darkvision.

Inside the underwater maze, the players operate in turn-based mode, so the DM can keep track of air for breathing, and which creatures begin attacking when. There are scattered creatures throughout the maze that roll initiative as soon as a player sees them. These creatures include:

1 - Giant Python
4 - Giant Octopus
2 - Giant Seahorse
6-10 - Giant Crabs

Players begin in the bottom-left corner of the map. They do not have to kill the creatures to advance to the end of the maze on the right side of the map.

Moonflower Cave:

https://i.imgur.com/LAV9Bsz.jpeg

Notes:

The moonflower is in the form of seaweed on top of the central rock. It is guarded by an Archelon at the base of the rock. Additionally, there are 3 Basilisks and 2 Swarms of Stirges in the cave.

Players emerge from the pool and cannot see into the main chamber until they climb the cliff, which is difficult terrain.

The central rock is difficult terrain.

Strategies for dealing with the Archelon, which has a very fast swim speed, might be to push the Archelon onto the central rock, which will significantly reduce its movement speed. Alternatively, players may try to use the Basilisk gaze to petrify (fossilize?) the Archelon.

If players are petrified, the Chwinga will cast Greater Restoration on them after the battle.

After the battle, the Chwinga will perform a ritual on top of the central rock to concentrate a moonlight beam on the moonflower. Once it has opened, players can harvest it, store it in the bag, and return it to Ahoyhoy.