Table 2. The location and characteristics of all seagrass meadows surveyed.
| Island | Area (m²) | Depth (m) | Wave exposure | shoot density (shoots m-2) | Species composition | Meadow patchiness | Dugong presence |
|---|---|---|---|---|---|---|---|
| Great Nicobar (B-Quarry) | 1500 | 5–10 | exposed | 1256.25±167.82 | Halodule pinifolia | fragmented | 0 |
| Camorta (Derring Bay) | 60000 | 0–5 | sheltered | 3333.33±1794.74 | Halodule pinifolia | fragmented | 0 |
| Camorta (Kardip) | 7500 | 0–5 | exposed | 2875±828.77 | Halophila ovalis, Halodule uninervis, Enhalus acoroides | fragmented | 0 |
| Camorta (Aalinchi) | 1250 | 0–5 | sheltered | 3331.25±390.16 | Halophila ovalis, Halophila minor | fragmented | 0 |
| Camorta (Bada Enaka) | 5000 | 0–5 | partially exposed | 1333.33±164.15 | Halophila ovalis, Halodule uninervis | contiguous | 1 |
| Nancowry (Champian) | 100 | 0–5 | sheltered | Enhalus acoroides | fragmented | 0 | |
| Nancowry (Hitui) | 3750 | 0–5 | sheltered | 2975±648.32 | Enhalus acoroides, Halodule uninervis, Halophila ovalis | fragmented | 0 |
| Nancowry (Malacca) | 1250 | 0–5 | partially exposed | 5081.25±835.44 | Halodule uninervis, Halophila ovalis, Enhalus acoroides, Halodule pinifolia | fragmented | 0 |
| Nancowry (Altaiyak) | 15000 | 0–5 | exposed | 4443.75±867.37 | Cymodocea rotundata, Halophila ovalis, Syringodium isoetifolium, Cymodocea serrulata, Thalassia hemprichii, Enhalus acoroides, Halodule uninervis | fragmented | 0 |
| Katchall | 15000 | 0–5 | partially exposed | 2306.25±554.09 | Halodule uninervis, Halophila ovalis | contiguous | 1 |
| Tillangchong (East Police Camp) | 750 | 0–5 | partially exposed | 2418.75±289.46 | Halodule pinifolia, Halophila ovalis | fragmented | 0 |
| Tillangchong (Floatsam) | 5000 | 5–10 | sheltered | 1737.5±139.38 | Halodule pinifolia | contiguous | 0 |
| Trinket | 250 | 5–10 | exposed | - | Halophila minor | fragmented | 0 |
| Little Andaman (Butlet Bay) | 5000 | 10–15 | exposed | 1781.25±164.37 | Halophila minor | fragmented | 0 |
| Little Andaman | 0–5 | exposed | - | Cymodocea rotundata | fragmented | 0 | |
| Little Andaman (South Bay) | 5000 | 0–5 | exposed | - | Halophila ovalis | fragmented | 0 |
| MGMNP | patches | 0–5 | partially exposed | - | Halophila ovalis | fragmented | 0 |
| Rutland | 5000 | 0–5 | sheltered | - | Halophila ovalis | fragmented | 0 |
| Tarmugli (north-east) | 2500 | 0–5 | partially exposed | - | Enhalus acoroides, Halodule uninervis, Halophila ovalis | fragmented | 0 |
| Tarmugli (south-east) | 3750 | 0–5 | partially exposed | - | Enhalus acoroides, Halodule uninervis, Halophila ovalis | fragmented | 0 |
| South Andaman (Haddo Foreshore Road) | 2500 | 0–5 | partially exposed | 1943.75±269.52 | Halodule uninervis, Halophila ovalis, Thalassia hemprichii | fragmented | 0 |
| South Andaman (North Wandoor) | 5000 | 0–5 | partially exposed | - | Halophila ovalis | fragmented | 0 |
| South Andaman (Kanaidera) | 2500 | 0–5 | exposed | - | Halodule pinifolia | fragmented | 0 |
| South Andaman (Mahuadera) | 2500 | 0–5 | exposed | - | Halodule pinnifolia | fragmented | 0 |
| Neil 1 | 40000 | 10–15 | exposed | 2893.75±271.26 | Halophila ovalis | contiguous | 1 |
| Neil 2 | 45000 | 10–15 | exposed | 3781.25±264.65 | Halophila ovalis | contiguous | 1 |
| Neil 3 | 15000 | 10–15 | exposed | 1775±290.29 | Halophila ovalis | contiguous | 1 |
| Sir Hugh Ross | 20000 | 10–15 | exposed | 2568.75±168.13 | Halophila ovalis | contiguous | 1 |
| Havelock (Radhanagar) | 60000 | 5–10 | exposed | 856.25±240.74 | Halophila ovalis, Halodule pinifolia | fragmented | 1 |
| Henry Lawrence | 30000 | 0–5 | exposed | 1150±200.78 | Halophila ovalis, Syringodium isoetifolium, Halodule pinifolia, Thalassia hemprichii, Halodule uninervis, Enhalus acoroides | fragmented | 0 |
| Middle Andaman (Below Shoal bay) | 5000 | 0–5 | exposed | - | Halodule pinifolia | fragmented | 0 |
| Strait island | 2500 | 0–5 | partially exposed | - | Halodule pinifolia | fragmented | 0 |
| Mayabunder (Bay) | 250000 | 0–5 | sheltered | 3781.25±1006.61 | Halodule pinifolia | fragmented | 0 |
| Mayabunder (Pokkadera) | 0–5 | partially exposed | - | Halodule pinifolia, Halodule uninervis, Halophila ovalis, Halophila minor, Cymodocea rotundata, Thalassia hemprichi | fragmented | ||
| North Reef (East) | 500 | 0–5 | partially exposed | - | Halophila ovalis | fragmented | 0 |
| Latuche (East) | 500 | 0–5 | exposed | - | Halophila ovalis | fragmented | 0 |
| Craggy | 2500 | 5–10 | partially exposed | 593.75±76.63 | Halodule pinifolia | fragmented | 0 |
| Diglipur (Kalipur) | 2500 | 0–5 | exposed | - | Thalassia hemprichii, Cymodocea rotundata | fragmented | 0 |
| Ross Smith | 12500 | 0–5 | partially exposed | 1225±139.19 | Halodule pinifolia, Halophila ovalis | fragmented | 0 |
| Temple Island | 625 | 0–5 | exposed | 641.66±83.33 | Halophila ovalis, Halodule pinifolia | fragmented | 0 |
| North Andaman (Casuarina Bay) | 3750 | 0–5 | partially exposed | 2337.5±188.33 | Halophila minor, Halophila decipiens | fragmented | 0 |
| Shreame | 5000 | 0–5 | partially exposed | 3350±119.46 | Halodule pinifolia | contiguous | 1 |
| Reef Island | 1250 | 0–5 | exposed | 1531.25±129.25 | Halophila ovalis | contiguous | 1 |
| East Island | 500 | 0–5 | exposed | - | Halophila ovalis | fragmented | 0 |
The rows highlighted in boldface are meadows with confirmed dugong usage.