The logo is an half fish and half woman creature called a Siren. She entices her victims by promising them sex. Disney changed the image of the Mermaid in a more innocent waif, and many people forgot about the true image of mermaids.
Starbucks is also a two-tailed mermaid. It changed it's image several times over the years and became more subtle, but it's still there. Look at the pictures below carefully:
This Starbucks goddess is also known as ISIS.
Isis is a goddess that began in ancient Egypt and the worship of her spread to many places in the world. Isis is the goddess of motherhood and fertility. She is also the mother of Horus, and she married her brother, Osiris. She is also worshiped in the religion of Paganism.
She is also known as the "Queen of Heaven." Some Christians are aware of the long history of Isis, Baal and sun worshiping that descends back to the biblical times of Nimrod and Semiramis. We see the images of the queen of heaven in many places. Here is one likeness:
In those Starbucks images, Isis has six strands of wavy hair. Six is the number of the Kaballistic "Macrocosm," the universe. It is the number of sides of the three-dimensional cube. The wavy lines symbolize vibration: the root nature of all substance.
Isis wears a crown on her head which is a cut up pentagram that represents the world of spirit. This crown is known to represent the presence of spirit hidden in worldly desire.
Isis appears as fish to symbolize Pisces.
What you do with this information is up to you. As for me, I prefer McDonald's iced vanilla coffee over Starbucks.