I am about to go work as a divemaster in Spain on the island of Mallorca in the Mediterranean and I am looking for some fish and coral guides to study so I can know what I am looking at when I get there. Any suggestions? I have found one book (that I don't remember the name of) but it was like $80 and I really cant spend that much. Any relatively inexpensive books or even websites with lists and pictures would be really helpful. Thanks!