The species listed below are likely a small percentage of the brown algae that live in the ocean adjacent to Mount Desert Island. Please send corrections and updates to info@vfthomas.com. Photographs are welcome. Thank you.
| Class | Order | Family | Genus | Specific Epithet | authority | common name | Sources (full citations given after this table) |
| ? | ? | ? | Agarum | cribrosum | ? | sea colander | Champlainers (RGG, TFV) |
| ? | ? | ? | Alaria | esculenta | ? | dabberlocks (whole plant, sporophylls) |
Champlainer (TFV) |
| ? | ? | ? | Ascophyllum | nodosum | ? | knotted wrack | Champlainers (RGG, TFV) |
| ? | ? | ? | Fucus | vesiculosus | ? | bladder wrack | Champlainers (RGG, TFV) |
| ? | ? | ? | Laminaria | digitata | ? | horsetail kelp | Champlainer (TFV) |
