Related Clues:

• Kelp, e.g
• Sow around wonder that grows in pools ...
• ___ Forest, place where Spongebob and Squidward probably go to do shrooms and sex stuff
• Ingredient in some smoothies
• Source of agar
• Brown alga rich in iodine
• Dashi ingredient
• Oceanic source of iodine
• Underwater forest flora
• Vegetation in underwater forests
• Brown sushi seaweed
• Growth in an underwater 'forest'
• Tangle of small spawn noted by Spooner in the Firth?
• Seaweed type
• Marine plant ending in trouble in river, was surfacing