Many ancient cultures connected the Seahorse with various Divine beings. 
In Rome and Greece, for example, the Seahorse was sacred to Poseidon and Neptune, potent sea gods. As a result, one of the keynote meanings for Seahorse is one of power and authority, particularly in matters of emotion and intuition because of the Water Element involved.
 
High quality, wooden-bound, Moleskin journal with satin, stitched-in bookmark.  Comes in 3 sizes!