48°38′N · 2°02′W
Île de tidal · Bretagne
Semidiurnal · 2 floods / day Causeway open · next turn soon

Teen summer coding camp · ages 13–17

Learn to code between low tide and high tide

The causeway floods twice a day. We schedule the bugs for when you can’t leave.

Reserve your seat See past projects

Sounding 03 · How it works

Cross. Code. Cross back when the sea lets you.

Cross at low tide

Walk the causeway while the water’s out — always supervised.

Code through the high

The road floods, the coding starts. No way out, no way to quit early.

Ship before it drops

Every high tide ends with something shipped.

Life at camp

Sun, sea, and a lot of code.

Campers walking the causeway toward the island at low tide — Crossing at low tide

Teens coding on laptops at a table overlooking the sea — The lab

A camper presenting her data chart to the group on demo day — Demo day

Two teens coding together on the rocks by the water — Field coding

The curriculum

Two weeks, one real dataset.

No tutorial grind — one real project, built and shipped between the tides.

See the full program →

Week 1

Sea legs

Python basics and your first charts.

Week 2

The project

One real dataset. Build it, ship it.

Cohorts

12 campers

Small groups, 1:4 staff ratio.

Output

Real code

A public repo and a five-minute demo.

Projects gallery

What teens shipped while the tide had them surrounded.

Specimen 01 · 2025

Plastic Drift Map

Noah, 15 · Cohort Spring Tide

Dataset: beach litter + wind

Maps wind and litter to predict where plastic beaches next.

Pythonpandasfolium

Specimen 02 · 2025

Limpet Clock

Amira, 16 · Cohort Neap Tide

Dataset: tide gauge + camera trap

A tiny classifier that counts limpet moves from time-lapse frames.

PythonOpenCVscikit-learn

Specimen 03 · 2025

Harbor Noise Index

Jules, 14 · Cohort Spring Tide

Dataset: hydrophone + ferry times

Finds the quietest hour for porpoises from underwater sound.

Pythonlibrosamatplotlib

All twelve projects →

The island & safety

A tide table is a schedule, not a hazard.

Campers cross only at low tide, always supervised. When the water’s up, nobody crosses — that’s the point.

Island logistics & the causeway →

Crossing windows2 per day

Posted every morning from official Brittany tide tables.

Staff ratio1 : 4

Instructors stay on the island through every high-water window.

Emergency exitOn call

A small boat and staff lead, for genuine needs.

Running since2019

Seven summers, zero unplanned swims.

Voices

Stranded on purpose.

Getting stranded over high tide is the only reason my drift map ever worked.Noah R. · Camper, 15

She came home with a repo, a sunburn, and a very strong opinion about limpets.Marc D. · Parent

Dates & cohorts · Summer 2026

Four sessions. Tide tables that don’t negotiate.

Session	Dates	Cohort	Status
Session I	Jul 6 – Jul 19	Spring Tide	Open
Session II	Jul 20 – Aug 2	Neap Tide	Open
Session III	Aug 3 – Aug 16	Spring Tide	3 spots
Session IV	Aug 17 – Aug 30	Neap Tide	Waitlist

Apply

Pick a tide window. Send the form. We’ll hold your spot above the waterline.

Reserve your seat