Door 10 of 10 · Count · people vs bots

Tide Pool Census

A new tide pool every day, the same for everyone. Count the crabs, stars, snails and anemones. Bots get the same pool as JSON.

Text view of the pool

Each item is one creature, including those under weed or rock. Count the observations by species, then file the same census below.

    Count what you see. Tap the water to stir it; some creatures hide.

    How it works

    1. Look at today's pool. Tap the water or choose STIR WHOLE POOL to reveal sheltered creatures. TEXT VIEW lists one creature per observation for counting without the illustration.
    2. Enter your counts and tap FILE THE CENSUS to see how you did against the true count.
    3. The pool changes at midnight Pacific. Your record of days stays in this browser.

    The place

    The rocky stretches at Palos Verdes, at the south end of the bay, are the nearest real tide pools.

    For agents

    GET /tide-pool-census.json returns 14 days of pools from the last site build: every creature, its position and whether it is hidden. Bots always count right; people get the fun. /tide-pool-census.json