Referring Clues

• Nautical danger
• Sailor's peril
• Coral ridge
• Lagoon perimeter
• Site of a wreck
• Coral ___
• Coral formation
• Sea-diving area
• Coral construction
• Water hazard
• Natural barrier
• Sailing danger
• Atoll protector
• Snorkeler's haunt
• Part of a sail
• Natural breakwater
• Snorkeling site
• Capitol ___ (Utah)
• Wreck site
• Bikini feature
• Snorkler's interest
• Offshore ridge
• Where a yacht might run aground
• *Cal ___
• Shorten, as a sail
• Scuba venue
• Site of many a shipwreck
• Underwater obstacle
• Buoy locale
• Navigational hazard
• Coral mass
• Atoll, for one
• Ocean obstacle
• Boat bottom bumper
• Underwater rock ridge
• Coral outcrop
• Coral habitat
• Possible shipwreck cause
• Coral buildup
• Underwater hazard
• Diver's domain
• Boat bottom basher
• Snorkeling destination
• Sea hazard
• Coral creation
• Marine hazard
• Boating hazard
• Popular snorkeling destination
• Offshore hazard
• Unseen danger for boaters
• Snorkeling locale
• Spot for some schools
• Place for scuba diving
• Unseen hazard
• Damselfish's home
• Place for snorkeling
• Squirrelfish's habitat
• Shipwreck site, perhaps
• Scubaing place
• Great Barrier ___
• It might be just below the surface
• Shipping hazard
• Submerged hazard
• Snorkelers' site
• Haven for sea life
• Navigation hazard
• Snorkeling venue
• Sailing hazard
• Nautical hazard
• Atoll barrier
• Atoll component
• Site of a shipwreck, perhaps
• Boat-bottom bumper
• Site of a wreck, perhaps
• Snorkeling destination, perhaps
• Great Barrier, e.g.
• Subsurface hazard
• It's just below the waves
• It's a great barrier
• Key feature?
• Sloop hazard
• Underwater knoll
• Erosion by-product
• Atoll's makeup
• Ship wrecker
• Good snorkeling spot
• Yachting hazard
• Shipwreck cause, sometimes
• Shipwreck locale
• Diver's haunt
• Coral Sea hazard
• Hazardous obstruction
• Lagoon barrier
• Lagoon protector
• Shipwreck site
• Hull hazard
• Atoll feature
• Great Barrier ___
• Nemo's home
• Atoll, essentially
• Reduce, as a sail
• Hazard for a hull
• Where ships may run aground
• Knot
• Coral structure
• Coral construct
• Shipwreck cause
• Scuba site
• Coral group
• Coral deposit
• Snorkeling spot
• Sailing peril
• Coral-viewing venue
• Coral growth
• Mariner's hazard
• Eel's hangout, often
• Underwater ridge
• Bikini feature?
• Biodiverse habitat
• Something for snorkelers to look at but not touch
• Ship hazard
• Pilot's hazard
• Seaman's knot
• Coral-encrusted structure
• Maritime danger
• Snorkeling spot, perhaps
• Coral ecosystem
• Usually splendid snorkeling site
• Atoll former
• Aquatic habitat
• Great Barrier, for one
• Scuba spot
• Rocky ridge
• Hazards to ships
• Diver's site, perhaps
• Boat bottom scraper
• Scuba diving area
• Good snorkeling locale
• Ridge just below the surface
• Feature of Hawaii's Molokini Crater
• The Keys, essentially
• Shoal
• Boater's hazard
• Underwater barrier
• Ship's nemesis
• Good area for snorkeling
• Coral expanse
• Clownfish habitat
• Shore-line hazard
• Lagoon's coral barrier
• See 41-Across
• Fish lovers' mecca
• Coral strip
• Skin diving locale
• Coral bleaching locale
• Place divers explore
• Place for a sponge
• Rugged chain of rocks
• Where to find some very wet sponges
• Ocean hazard
• 6 Down component
• Ocean obstruction
• Underwater habitat
• Home to Nemo, in "Finding Nemo"
• Home to Nemo, in Finding Nemo"
• Shallow water obstacle
• Submerged threat
• Sand bar
• Coral barrier
• Coral feature
• Diver's place
• Ridge of coral (4)
• Ridge of coral
• "Won't somebody get me off of this ___" Sublime
• Old 97s "Barrier ___"
• '90s "Place Your Hands" band
• U.K. band that had "Glow" album
• Submerged barrier
• Submerged ridge of rock or coral
• Bank right to reject payment
• Coral ___ - ___ knot
• Atoll
• Chain of rocks underwater
• Rock in shallow water
• Knot sailors try to avoid
• Rock formed of coral
• Undersea ridge
• Coral formation - kind of knot
• Rocky part of sail
• Rocks in shallow water
• Diverse ecosystem
• Hazard for ships
• The knot sailors try to avoid
• Reduce a sail's surface - shipping hazard
• Bar open to all, beginning to end
• Shorten sail
• Bank that may be taken in
• King repelled charge on the rocks
• The work of 12 is tied
• See 15
• Bank sailors try to avoid?
• Hazard to sailors taken in when it's blowy
• Ship's hazard
• Key, e.g.
• Coral shipping hazard
• Main chain putting price right up
• Kind of knot
• Ridge of rock contributing to Tiree fatality
• Ridge in portion of sail
• Bar: right price, but going up
• Arbiter securing Spain's chain
• Run and charge around in rocky area
• Britpop band with "Glow" album
• Large coral formation
• Spot for snorkeling
• Bank's not entirely free finance
• Australia's Great Barrier ___
• 1963 John Wayne film, Donovan's ___
• Sailboat hazard
• Submerged rock or coral
• Vibrant marine ecosystem
• Shallow-water hazard
• Home to Nemo, in a Pixar movie
• Home for a clown fish
• Setting for some schools
• A lot of coral whistle-blower covers close to shore
• Ocean's coral structure
• Coral shelf
• Sound barrier?
• Aquatic barrier
• Marine ecosystem
• Barrier ___
• Coral environs
• Break free at sea
• Many a scuba destination
• Home to Pixar's Nemo
• Type of knot
• Snorkeler's spot
• Sea's coral structure
• Vibrant ecosystem
• Scuba diving site
• Natural feature near Queensland
• Possible barrier to free movement?
• Lagoon's coral formation
• Lagoon's coral structure
• Sandbank
• Coral conglomeration
• Underwater coral structure
• Shipwreck site, maybe
• Diving spot
• Sea anemone habitat
• Ecosystem built by corals
• Habitat becoming bleached by global warming
• Home of Marlin and Nemo in "Finding Nemo"
• Hazard in maritime travel
• Area with lots of schools
• Ocean biome damaged by some sunscreens
• Thing formed by coral
• Place to find brain coral
• Diver's destination
• ___ shark
• Site for sponges
• Colorful ecosystem
• Snorkeler's destination
• Habitat threatened by bleaching
• Utah's Capitol ___ National Park
• Danger for a mariner
• See 17-Across
• Scuba diver's destination
• Where to find a very wet sponge
• Biodiverse underwater ecosystem
• 49-Down spot
• Place to snorkel
• Big name in flip-flops and surfing apparel
• Ecosystem for an estimated 25% of all marine species
• "Donovan's ___"
• Endangered underwater ecosystem