Selkies (Ireland):
In Scottish mythology, selkies (also spelled silkies, sylkies, selchies) or selkie folk (Scots: selkie fowk) meaning “seal folk” are mythological beings capable of therianthropy, changing from seal to human form by shedding their skin.

Yemoja (africa)
Yemoja is the African Goddess of the Ocean and the patron diety of pregnant women. She is honored not only in Africa but in Brazil. She is the creator goddess of the Yoruba tribe. This goddess went with the members of the Yoruba tribe when they were captured and taken to various areas in the world as slaves.

Yemaya (West Africa, Brazil and Afro-Caribbean)
Yemaya is the great mother who lives and rules over the seas.  Water is essential to life, so without Yemaya, life on earth wouldn’t be possible.  Although she’s maternal and nurturing, she’s also fierce.  Her punishments can be terrible when she’s outraged, but she’s fair minded and forgiving when proper remorse is shown.  Yemaya is clever and brave. 

Olokun (Nigeria, Cuba, Brazil, Trinidad)
Olokun (Yoruba: Olóòkun) is an orisha. Olokun is believed to be the parent of Aje, the orisha of great wealth and of the bottom of the ocean. Olokun is revered as the ruler of all bodies of water and for the authority over other water deities.