Related Clues:

• Aquarium growth
• Large seaweed
• Sea moss constituent
• Food for sea urchins
• Seaweed with leathery fronds
• Pool life form
• Sea lettuce, e.g.
• Plankton component
• Sustenance for a sea urchin
• Chlorophyllous plant
• Pond floater
• Pond scum component
• Sushi ingredient
• It lacks roots
• Sea greens