| SARGASSO | Floating seaweed forming dense masses in the Atlantic (8) |
| HEATHER | Shrub growing in dense masses |
| THETFORD | The first transport for the masses in Norfolk? (8) |
| NUCLEOLI | Masses in RNA producer that miraculously uncoil around middle of cell in reverse (8) |
| TOODLEOO | Overly embracing most of masses in farewell (6-2) |
| DIOMEDEISLANDS | Two small land masses in the Bering Strait, separated by the boundary line between the US and Russia (7,7) |
| PLANKTONIC | Boost with support of the superficial masses, in the main |
| ILES | Small land masses in the Seine |
| ISLETS | Tiny masses in the sea |
| THALAMI | Two egg-shaped masses in the brain (7) |
| OBRECHT | Most famous composer of masses in the late 15th century, d.1505 (7) |
| TONSILS | Lymphoid masses in the throat (7) |
| SEA | Part of the North Atlantic, lying between the West Indies and the Azores, notorious for its floating seaweed (8,3) |
| ATLANTIS | A legendary island in the Atlantic Ocean, lying west of the Strait of Gibraltar. The principal sources for the legend are two of Plato's dialogues, Timaeus and Critias. (9) |
| SARGASSOSEA | Body of water in the North Atlantic Ocean strewn with free-floating seaweed (8,3) |
| CANARIES | A group of mountainous islands in the Atlantic off the northwest coast of Africa forming Spanish pro |
| MACKEREL | Any predatory marine fish of the family Scombridae, chiefly occurring in the Atlantic and Pacific oceans (8) |
| TRIANGLE | Bermuda -, mysterious region in the Atlantic Ocean (8) |
| DOLDRUMS | Belt of calms and light winds in the Atlantic and Pacific (8) |
| TENERIFE | Spanish island in the Atlantic whose capital is Santa Cruz (8) |
