Choose young, clean, tender plants with pale yellow tips that are washed up on shore or floating on the sea surface.
Wrap plant tips in taro leaves. Keep in the refrigerator or freezer if not eaten right away. Sun dry tips and whole plants for long-term storage.
NOAA
Sea oak is found in wave-swept areas often attachedto rocks and reefs. The plant has large tree-like branches on a central stem and is dark brown with golden-brown tips. Small air-filled bladders on the stem help the plant hold up (Novaczek, 2001).