Answer:

CORAL

Answer	Crossword Clue
CORAL	Reef builder
CORAL	Color close to salmon
CORAL	RED

CORAL	Reef material
CORAL	Reef deposit
CORAL	Reef growth
CORAL	Invertebrate in some endangered structures
CORAL	Salmon relative
CORAL	Undersea?
CORAL	Deep pink
CORAL	Reef stuff

CORAL	Cay composition
CORAL	Pinkish yellow
CORAL	Skeletal deposit
CORAL	Marine colony former
CORAL	Colorful skeleton
CORAL	Key material
CORAL	Red shade
CORAL	Yellowish-red

CORAL	... Gables, Florida
CORAL	Marine reef builder
CORAL	Pinkish-orange
CORAL	Reef composition
CORAL	35th anniversary gift
CORAL	Salmonesque color
CORAL	Jellyfish kin
CORAL	Necklace material

CORAL	Snorkeler's vista
CORAL	Sea-born jewelry material
CORAL	Great Barrier Reef skeletons
CORAL	Reef buildup
CORAL	Reef component
CORAL	Snorkeler's milieu
CORAL	Variety of poisonous snake
CORAL	Atoll base

CORAL	Gemstone that was once alive
CORAL	Seaside souvenir
CORAL	Atoll's composition
CORAL	Soft pink
CORAL	Marine formation