Never collected in padre, or collected RFA the anemones i collect are.... Warty rock anemone, onion anemone, and tricolor anemone.
For the warty nems.... Just pull up a rock and scrape them off with a dull key or credit card.
Onion anemones are sand dwellers but i usually find them when the water gets rough washed up on the beach.
Yhe tricolor nems are usually attached to the back of a hermit crab shell... You can also pick them up when the water gets rough.
From what i have gather on the RFA is that they are a little deeper starting a about a meter deep or so for the bland colors and up to about 60ft. for the more colorful ones.
You guys should have some really cool stuff down there. How far is the continental shelf from you guys? I have watched some videos of spearfisherman at the aransas jetty and have seen lots of coral just a meter or so underwater.
So get suited up, get wet, have fun, and post some pictures!! Please