An area in a large body of water with many shallow areas.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "shallows" in a sentence
"As the thaw begins, look for open water between ice sheets and the shoreline, particularly in shallows adjacent to deep water."
""If that were so, there would be no need to keep its constantly moving location a secret or to hold it only when the moon is down, during that time some call the shallows of night.""
"The swan floats lonely with her brood in shallows cool,"