The Symbol ௐ

The sound of Everything
The totality of sound, existence and consciousness
The sound of the Sea

ௐ is actually two letters, derived from the Tamil alphabet: O and M. Om.

Om (or aum) is a primordial sound and concept which appears in some form or another in all the eastern philosophies and religions.

For me it represents a guide in to the unknown, navigating the deep waters of the seas.