Yes "clearer" is the word, I grew up in Seabrook, still live in Seabrook and the old timers have said that oyster reefs changed after the first dredging of the Houston ship channel, Houston ship channel had a very narrow width so ships did what my boss called "the Texas Chicken" when passing each other.. I worked at Henry's Seafood on the point as a kid late 70's and early '80's.. everyone thinks the water was polluted by industrial traffic but it wasn't its brown from silting