Plant a living defense.

Reef structures grow from sampled seabed and ledges. The raised placement lens helps you see beneath a finger. Use the preview, terrain nudge controls and explicit confirmation; a red or invalid preview explains what needs moving. Feeding coral produces food, shelters and lotus protect, anemones heal, and other structures add utilities. Grow them through three stages. A Current Vent’s large arrow and moving stream show its direction; Rotate changes that direction. Tank expansion creates more terrain and reef spaces.

Step 1

Open Reef and choose a structure or Move an existing one.

Step 2

Tap or drag a spot; nudge onto a ledge and rotate a vent if needed.

Step 3

Check the range and grounding, then confirm Place.

Keyboard

Arrow keys nudge · R rotates · Enter confirms · Escape cancels

Touch

Drag the preview · nudge / rotate buttons · Place confirms

Controller

Stick nudges · X rotates · A confirms · B cancels