+------------+
| Station n  |
| id         |
| name       |

----------------------------
+---------------+
 | Transect     |
 +--------------+
 | id           |
 |name          |
 |description   |
 |station1  (FK)|
 |station2 (FK) |
 |station3  (FK)|
 |station4  (FK)|
 +----------------+