Reefs

Noun island consisting of a circular coral reef surrounding a lagoon
Tokelau, which consists of three small Pacific atolls administered by New Zealand, gets 93% of its electricity from solar panels, and the other 7% from a sustainable supply of coconuts.
Noun ability or tendency to float in water or air
Its positive buoyancy prevents the sub from landing on a reef, and its low light and noise emissions ensure the fragile ocean ecosystems remain undisturbed.
Adjective using up the supply of
Two small islands in South Asia's first biosphere reserve have sunk into the sea. Their submergence is primarily due to depleting coral reef mining.
Verb cause to go in a certain direction
Colorful sponges and other marine life are starting to colonize the underwater museum’s statuary and draw tourists away from a threatened natural reef off the Cancun coast.
Adjective caught in a trap
Attached to rocks on the sea bottom or on coral reefs, they wait for fish to get ensnared in their venom-filled tentacles.
Noun effect of one person, thing, or action on another
If done with no environmental impact study on the unique and delicate ecosystem of a coastal area, this project may result in the destruction of mangrove trees and natural reefs buffers, resulting in extreme beach erosion.
Adjective solitary and withdrawn from the rest of the world
The rare and reclusive golden cowrie spends most of its life hiding under rocks in the cracks and crevices of reefs in the South Pacific.
Noun ridge of jagged rock, coral, or sand just above or below the surface of the sea
This extraordinary artificial reef (MUSA) off the east coast of Mexico is made of life-casts of real people constructed from materials which encourage coral to grow.
Noun protected area for wildlife
Two small islands in South Asia's first biosphere reserve have sunk into the sea. Their submergence is primarily due to depleting coral reef mining.
Noun sinking until covered completely with water
Two small islands in South Asia's first biosphere reserve have sunk into the sea. Their submergence is primarily due to depleting coral reef mining.
Noun thin flexible appendage in an animal used for grasping or moving about
Attached to rocks on the sea bottom or on coral reefs, they wait for fish to get ensnared in their venom-filled tentacles.
Adjective showing a lack of courage or confidence
After his son is captured in the Great Barrier Reef and taken to Sydney, a timid clownfish sets out on a journey to bring him home.
Adjective full of poisonous fluid injected into prey or attackers by a bite or sting
Attached to rocks on the sea bottom or on coral reefs, they wait for fish to get ensnared in their venomous tentacles.
Noun common name of a organism, as distinct from its scientific name
Synanceia, the vernacular being stonefish, camouflages itself in a grey, mottled color like a stone, and like a stone it rests at the bottom of a reef, until its prey gets too close.