Dolphins and Swans:It is believed in Greek Mythology that Aphrodite the goddess of love took the form of Dolphins and hence the delightful dolphins are looked upon as the symbol of love and its grandeur. Even the iconic image of two white swans facing each other to make a heart symbol is closely associated to love and defines grace and elegance. The Christian texts equate the purity of the Holy Virgin being akin to that of a Swan, hence the sending of Swan images to your beloved is an expression of love that is pure and not corrupted by the desires of the flesh..