Related Clues:
- Seaweeds
- Organisms found in Portuguese area when river very briefly bursts out
- Form of fuel
- Simple plants
- Seaweeds, etc
- Source of vegetable fuel
- Dried vegetable fuel
- Some got energy from this power breakfast
- Kelp beds, essentially
- The extremes of Peter the Great useful to whisky industry
- Biodiesel source
- Pond scum, e.g
- Highly efficient carbon sink
- Seaweeds etc
- Pool slime