Algae are an important source of energy for living things in the world.They are a source of food and oxygen.
However, an overgrowth of algae can be ugly and sometimes, toxic.
Thus, algae in a dream can represent something that was once positive but now threatens to become negative.
Dreaming about algae can be a sign that you are overdoing something to the point where your actions, which were once constructive, have now become harmful.
For example, you may have decided to work harder or study harder – a positive goal – but are now working or studying so much that you are neglecting the important people in your life.
You may have tried to be more affectionate toward someone and are now showing them so much affection that they feel smothered.
You may have tried to be more sensitive and as a result, are no longer thinking or behaving rationally.
If you dream about algae, it can be a sign that you need more balance in your life.