Topic sentence (main idea): detritus (decayed cord grass), nursery, feeding grounds, habitat, plankton get nutrients here, low energy environment
Indicators (supporting details): sea grasses (cord grass and turtle grass); pipefish (related to seahorse); hermit/blue/stone crabs; shrimp; jellyfish, sargassum algae; oyster shells, snails; clams, minnows, seagulls, heron, mangrove marsh (2500 acres)