1 |
|
Sand |
|
2 |
|
Mud |
|
3 |
|
Clay |
|
4 |
|
Silt |
|
5 |
|
Stones |
|
6 |
|
Gravel |
|
7 |
|
Pebbles |
|
8 |
|
Cobbles |
|
9.1 |
|
Rock, Rocky |
|
9.2 |
|
Boulders |
|
10 |
|
Coral and Coralline algae |
|
11 |
|
Shells (skeletal remains) |
|
12.1 |
|
Two layers, e.g. sand over mud |
|
12.2 |
|
Mixed qualities, e.g. fine sand with mud and shells |
|
13.1 |
|
Weed (including kelp) |
|
13.2 |
|
Kelp, weed |
|
13.3 |
|
Seagrass (where distinguished from weed) |
|
14 |
|
Sandwaves |
|
15 |
|
Spring in seabed |
|