In coastal features, what does the symbol for Rock or coral reef denote?

• A. Rock or coral reef
• B. Sand beach
• C. Seagrass bed
• D. Mudflat

Answer: (A)

Symbols for coastal features convey the type of seabed or substrate present near the shore. The symbol that represents rock or coral reef marks areas where the bottom is hard, consisting of rocks or coral formations. This kind of substrate forms shallow, uneven surfaces that can break waves and create navigation hazards, while also supporting diverse reef ecosystems. It’s distinct from other bottom types: a sand beach indicates loose sand along the shore, a seagrass bed shows underwater meadows of flowering plants, and a mudflat represents soft, muddy terrain. So the rock or coral reef symbol specifically denotes those hard, reef-associated areas.