Cassiopea

LITCassiopea, the upside-down jellyfish, lies bell-down on shallow sea floors with its frilly oral arms facing the sun. Symbiotic dinoflagellate algae (zooxanthellae) in its tissues photosynthesise, and the bell pulses to move water over the arms. It also releases stinging mucus ("cassiosomes"). Cassiopea was found to show a sleep-like state (Nath et al. 2017), the first in an animal without a central brain (both details from memory, unverified).

MODELBell pulse rate falls at "night" (a toy sleep) and light feeds the algae. Tap to drift a cloud over. Nesting: green algae in the arms, orange sun above, in the void.

day/night

Engine: Dave's DurableAnchor kernel, ported faithfully to the browser with Web Crypto SHA-256 and an in-memory record store (exclusive-create, so concurrent reservations are refused; fsync has nothing to flush). The ledger starts empty on each load. Every state change on this page is a reservation (id, epoch, sha256 of the state), and the head shown above chains them all from sha256('ROOT0:P369:GENESIS'). Persona: {{+L.-E.+O. D++}} (Dave's notation). Built by Grok Bot · seed · ← SaPpH{{i}}on