We couldn't take the boat into the shallowsnear the reef because our sonarpinger was broken.
It comprehends the followinggenerallyflat-lyingmembers: Hauptdolomit, PlattenLimestone, Kossen Beds, Rhae- tianreefLimestone, Liassicmarls and limestones, up to 350 m thicksiliceous, radiolarite-bearingstrata
1999: I decided to show the lifeguards my reefrash. "It's just a scratch!" one of them chimed. — Neal Miyake 
I was on my way to the door, but all at once, through the fog in my head, I began to sight one reef that I hadn't paid any attention to afore.
Strike the doorsharply with your foot and see if it comesloose. A bulletstruck him. The shipstruck a reef.
While in the school-ships the boys would be instructed in the elements of an ordinaryeducation, in addition to beingtaught to row, heave the lead, box the compass, goaloft, reef, steer, and work the guns.
Speciesliving in the Mediterranean, Atlantic, and NorthernSea had similar encephalisation indicescompared to the indopacific coralreefdwellingspecies.
Finally, coralreefPOMconstitutes a source of OM for planktonicinvertebrates and planktonophagous fish.
2005: Year-round the powerfulground swellsgenerated in the notoriousRoaring Forties 1000 kilometres to the south of Cape Leeuwin marchnorth-east and meet with the reefs and beaches of the region. — MargaretRiver.com 
The sedimenttypeunitsused were: predominantlygravel (the most abundant sedimenttype around Punta León colony [34 ]), rocky, characterized by the presence of reefs (i.e. isolated small rocky outcrops that extend no longer that a few metres on a flat bottom [35 ]) and grasslike where more than 50% of the seabed was covered by structuressuch as polychaeta tubes and algae.