Alifushi and Etthingili (Powell Islands in the Admiralty Chart) stand on a detached reef of their own with very deep waters (no sounding) between this isolated reef shelf and the northern end of the main Northern Maalhosmadulhu Atoll. Captain Robert Moresby named this small island group after Lieutenant F.F. Powell who assisted during the difficult survey of the Atolls of the Maldives in 1834-36. Later promoted to Captain, Powell went on to survey the NW coast of Ceylon.
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| Monsoon | Side | High tide (m) | Mid tide (m) | Low tide (m) | Lagoon side |
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| Natural lagoon or not | Size (ha) | Natural entry to the island | Lagoon depth (m) |
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| Location | Name of the site | Size (sq ft) | Purpose of protection | Fauna | Flora |
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| Location | Name of the site | Size (sq ft) | Purpose of protection | Fauna | Flora |
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| Location | Name of the site | Size (sq ft) | Fauna | Flora |
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| Location | Name of the site | Land area covered | Sea area covered | Purpose of conservation | Fauna | Flora |
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| Location | Name of the site | Estimated age | Reason for protection |
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| Location | Name of the site | Size (sq ft) | Reason for protection |
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| Location | Name of the site | Size (sq ft) | Reason for protection | Fauna | Flora |
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| Visual clue of historical data | Evidence | Prior usage of the island |
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