Hi Richard - A VERY WARM WELCOME to MASA! I might have missed your introduction to MASA. If you have not introduced yourself yet, please do so, by creating a new thread in the "New Members" section, telling us about yourself, your tank/s and your reefkeeping experience?
To answer your question:
Pic 1) majano anemone - these are quite pretty, but are considered a pest anemone. Not as bad as the aptiasia (glass) anemone - these quickly become a huge pest in our tanks....
Pic 2) not too sure - might be a zoanthid of sorts...... but might also be majano (that is "stressed")
Pic 3) and Pic 4) - seems to be some macro algae - either turtle weed, or something similar.
Perhaps someone else can chip in?