31. Tidal flats will decrease thus effecting the population of shellfish along with other coastal animals.32. Still later, the stabilization of sea level led to the development of large tidal flats . 33. They commonly inhabit tidal flats , beach zones, broken bottoms and large areas of uniform substrate. 34. Tidal flat conditions returned as the shallow sea that created the Curtis Formation retreated from land.35. This part likely represents the deposits of an environment of estuaries, tidal flats or coastal plains. 36. Bald eagles and Canada geese swooped overhead, and blue herons and oystercatchers worked the tidal flats . 37. Tidal flats on the ocean side extend for.38. When the tide is out the boats can run on the tidal flats using their wheels. 39. Finally, the carse is actually raised tidal flat deposits, with a base of glacial boulder clay. 40. Tidal flats extend considerably into the Severn estuary.