Pearl Nudge

Control a hermit crab on a grid and push every pearl into a shell to clear the level. Each pearl that enters a shell flips day and night. By day, kelp grows and blocks pearls (you can still walk through), and the squid sleeps. By night, kelp shrinks so pearls can pass, but the squid wakes and stares left up to 4 tiles—pearls block its sight. Stones and the squid body are solid obstacles. Chain-push pearl rows when the path ahead is clear. Beat the clock (180s). Undo and Reset each cost coins.