Explore an island surrounded by the sea. Walk, swim and sail to discover how waves, rivers, volcanoes and corals shape the land.探索一個四面環海的島嶼。步行、游泳和駕船，發掘波浪、河流、火山和珊瑚如何塑造地貌。
🎯 Mission任務Visit all 12 numbered beacons to fill your field notebook, then take the quiz.到訪全部 12 個編號信標，填滿你的考察筆記，然後完成測驗。
W A S D / ↑ ← ↓ →move移動
Shiftrun / sail faster跑步／加速
🖱 draglook around轉動視角
🖱 wheel / 🤏 pinchzoom縮放（滾輪／雙指）
Mmap地圖
Nnotebook筆記
O🛰️ overview of the whole island鳥瞰全島
Spaceopen / minimise the info card打開／收起資料卡
☀️time-of-day slider (⏸ pauses time)時間滑桿（⏸ 暫停時間）
🌦️weather: sunny, cloudy, rain, storm, or 🔄 auto天氣：天晴、多雲、有雨、暴風雨，或 🔄 自動
✨graphics: ✨ high or 🐢 low. On Auto it turns 🐢 amber when it has switched to low because the game ran slowly, and goes back to high when it runs smoothly畫質：✨ 高或 🐢 低。選「自動」時，如遊戲運行緩慢而切換至低畫質，🐢 會變成橙色；運行流暢後會恢復高畫質
Walk into deep water and you'll get a boat automatically.走進深水時會自動換乘小船。
Language 語言
Graphics畫質
⚡ Lightning flashes (storm)⚡ 閃電閃光（暴風雨）
Cards pop out at beacons到達信標時自動彈出資料卡
Follows the HKDSE Geography curriculum: river and coastal environments, volcanic hazards and map skills, with coral reefs and the continental shelf as extension. 配合 HKDSE 地理課程：河流及海岸環境、火山災害和地圖技能，另有珊瑚礁和大陸架作延伸學習。This is a model island that brings many landforms together for learning. A real island this size would not have all of them. Not to scale: the explorer is drawn much bigger than real life. 1 grid square = 1 km.這是一個把多種地貌集中起來以供學習的模型島嶼，同樣大小的真實島嶼不會擁有全部地貌。並非按比例：探索者比真實大得多。地圖上 1 格 = 1 公里。
🏝️ Sea Lab海洋實驗室
N
Grid ref方格坐標
Facing面向
☀️ Time時間
Sun太陽
🌊 Tide潮汐
🌦️ Weather天氣
💨 Wind風
⚡ Lightning閃電
Model note: sun and stars at an equinox, about 18°N. Time runs fast, faster at night. The Moon is not shown. Tides: two high and two low tides a day, as in Hong Kong, but the range is exaggerated (Hong Kong's is about 1–2.5 m), and real tides come about 50 minutes later each day. Weather: here the wind always blows from the north-east; in a real storm or typhoon it changes direction as the storm passes. The waves change at once. After rain the river rises, turns muddier and flows faster once the lag time has passed; its rise is exaggerated, like the heights, so that in a storm it can be seen overflowing onto the floodplain. A storm also raises the sea above the normal tide (a storm surge); here it is exaggerated (3 m, where a real gale raises Hong Kong's sea well under 1 m and a strong typhoon 2–3 m) and the whole sea rises evenly, whereas a real surge is highest on coasts facing the wind and in funnel-shaped bays. Lightning strikes closer and more often than in most real storms so it can be seen, and its flash is kept small and soft for safety; the time from flash to thunder uses the real speed of sound.模型說明：春分或秋分、約北緯 18° 的太陽和星空。時間加快，夜晚更快。沒有顯示月亮。潮汐：與香港一樣每天兩次高潮、兩次低潮，但潮差經誇大（香港約 1–2.5 米），而真實潮汐每天約遲 50 分鐘。天氣：模型中一直吹東北風；真實的暴風雨或颱風經過時，風向會改變。波浪即時變化。下雨後經過滯後時間，河水上漲、變得更混濁和更急；水位上升的幅度與高度一樣經過誇大，好讓暴風雨時可看到河水漫過河岸淹沒氾濫平原。暴風雨亦會令海面高於正常潮位（風暴潮）；模型中的幅度經誇大（3 米，真實的烈風令香港海面上升遠少於 1 米，強颱風約 2–3 米），而且整個海面平均上升，但真實的風暴潮在迎風海岸和漏斗形海灣最高。閃電比大部分真實的暴風雨更近、更頻密，好讓學生看見；為安全起見，閃光細小柔和；由閃電到雷聲的時間則按真實的聲速計算。
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🗺️ Island map島嶼地圖
Height (low → high)高度（低 → 高）Depth (shallow → deep)水深（淺 → 深）Contour every 100 m等高線（每 100 米）River & tributaries河流與支流Watershed (edge of the river’s drainage basin)分水嶺（流域邊界）Beacon信標You你的位置
WASD move · drag to look · scroll to zoom · M map · O overviewWASD 移動 · 拖曳轉動視角 · 滾輪縮放 · M 地圖 · O 鳥瞰