Oh yes, and all of the South Texas coast was impaced by it, North Padre Island especially. Booms, however, protected most of the estuaries. My point was about where the oil hits shore. The marshes of LA being much more vulnerable and valuable than the sandy beaches of South Texas.
Yes. There is a VERY complete scientific report on the effects of the spill off the Texas coast. It turns out that the "Bureau of Land Management" (I assume of the state of Texas) had recently completed a very large biological survey of that part of the coast before the spill hit, so they had a good baseline for comparison. Again, the results were indicative of a pretty rapid recovery.
That report is online somewhere, but Heaven knows if I can find it again.