Nobody hates a sea turtle. I just want to get that out there right now. They’re big, weirdly graceful for their shape, and the poster children for ecological conservation.

So how are you going to turn these gentle giants – or, rather, the D&D Cretaceous-era equivalent – into an adventure for your table? Well, like many of the Beasts we’ve covered in this blog, having an Archelon in your game is not about how your players can fight it, but rather what it means to your world.

What happens to big, essentially harmless creatures in your D&D setting?

Well, if it’s anything like ours, they’re probably going to have a pretty rough time.

Human beings (and by extension Elves and Dwarves and Orcs and so on) have a very hard time with “Live and let live” in general, especially when the other living thing is getting in the way of what they want. So if you want Archelons to be a motivating force in your adventure, the best thing you can do is make them a pain in the butt.

Picture this: a fishing village on the Sword Coast, full of merchants and fishing boats and people who make their lives from the sea. But once every twenty years or so, the Archelons come back to this place to mate and lay eggs because that’s what they’ve done for the last hundred million years and they’re not going to stop because a bunch of jumped-up bipeds built their homes there.

Now normally the fishing village loves this. It’s a huge festival, bringing in money and tourism from up and down the coast. They have special events, make little hats, display sculpture and artwork by local artisans and hold a Bardic contest to see who can perform the best song or poem about these gentle giants who have finally made their return. Everyone loves the Archelon Festival, and you could stop here and just make it into a fun setting for your players to stumble into on their way to another adventure.

If you want to keep going, though, there are two directions you can take this.

Where Have All the Turtles Gone?

For centuries, they’ve come like clockwork, and this village has a whole bureaucratic system built around the return of the Archelons. But this year, they didn’t come. Everyone waited at the shore with their flags and handmade signs, the band was cued up for the first shell that breached the waves, and…. nothing. They waited the whole day, and all they got were some soggy bunting and crying children.

Now these simple fisherfolk ask your Party for help: find out what happened to our Turtles. We can’t pay much, but we can dedicate this year’s festival to the heroes who brought them back.

What happened to the Archelons is, of course, up to you. Maybe they’ve been poached, as is not uncommon in our world. A fleet of ruthless pirates discovered they can make plenty of gold from these creatures, selling their shells to artificers for their craftwork. They can sell their meat to exotic meat merchants who’ll unload it at a premium in big cities like Waterdeep and Baldur’s Gate. And perhaps their glands and organs fetch a high price on a black market for alchemists looking to make strange potions and ointments, promising the long life and strength of these great creatures.

Perhaps the Alchemists are the problem. Maybe there’s an arcane laboratory churning out weird enchantments and concoctions, dumping their waste and their failure into the nearby ocean. After all, there’s no magical EPA in Faerûn, so who’s to stop them from rolling barrels of expired Basilisk blood and Hippogriff urine and Beholder Ichor into the sea when it’s of no use to them? These are people hunting for the secrets to the cosmos, looking to control the very weave of reality itself – why should they care about what happens to a bunch of turtles?

Or maybe it’s a more mundane, ecological problem. There’s some new disease that ravaged the Archelon population this year, cutting their numbers and perhaps directly interfering with their ability to find their nesting grounds. Maybe a Dragon Turtle has moved into the area, looking to manage some shipping lanes and it snacks on these creatures like popcorn. Perhaps something is interfering with their food supply – they can’t eat enough to even get to the village, much less breed properly.

Whatever the problem is, will your Party agree to put themselves in harm’s way to save a flotilla of Archelons just for a single fishing village?

On the other hand….

Oh Gods, So Many Turtles

The festival this year is overrun, and what should be a cause for celebration is turning into a real problem.

There are Archelons everywhere. At first it was exciting, but as wave after wave of huge, impassive sea beast came out of the oceans, the town’s leaders began to realize the irony that there may be too many turtles for them to actually hold their festival.

The beach? Turtles everywhere you go. The market square? There’s turtles nesting in market stalls. The main stage? Crushed under the weight of turtles.

And it’s not just the festival preparations that are being ruined – Archelons are damaging the docks, getting into boats, eating stores of food that are supposed to go towards feeding the people living there. While certainly no one wants to harm these creatures, they are certain that they can’t live with them like this either.

What is your Party to do? Make it expressly clear that they are not to harm a single beast, but that they will be rewarded if they can discover the cause of this overpopulation and find a way to get them back into the sea.

Perhaps the cause is perfectly natural. An overabundance of food and good living conditions, bringing Archelons from all over the oceans to this specific shore. Or, if we invert it, maybe there’s no food anywhere else. This isn’t overpopulation – it’s a whole population with nowhere else to go.

This being D&D, you could make it more fantastical than that, of course. Remember the poachers from before? It’s so much work to get ships and hunt the Archelons down. Wouldn’t it be easier to bring them to you? They’ve paid a Wizard to build a beacon, some weird, arcane thing that calls to these ancient beasts and brings them ashore, pulling them all to the place they were going to visit anyway. Somebody in this little fishing village has been paid off by terrible people to plant this beacon, and they’ve managed to ruin both the festival and their hometown for whatever these poachers are willing to throw at them.

Either way, what an adventure with Archelons can do for your players is ask them if they’re willing to do something very difficult for very little real reward. They’re not going to get an ancient artefact or piles of gold. They’re not saving the world from certain destruction.

Save the turtles, get a festival and some sashimi. No treasure, no glory, just knowing you helped.

That runs counter to most D&D adventures, and some players won’t care. But the ones who do care? They’ll remember the Archelon Festival long after they’ve forgotten which dragon they killed for which hoard.