“The Old Woman of the Sea’s themes are water, recreation, rest and art. Her symbols are sand, saltwater and sea creatures. Among the Native Americans of California, this simple designation says it all. This Goddess is a primordial being whose essence and power is linked with the ocean and all that dwells within. Old Woman of the Sea washes into our lives today with waves of refreshment and relaxation. She is also a powerful helpmate for all water-related magic.
Sandcastle-building competitions began in Imperial Beach, California in 1981. Many of the artistically crafted sculptures feature sea creatures and other water themes. Alongside the festival, all manner of community activities take place, including children’s competitions, feasting and live music. So, stop by a gardening store and get yourself a little sand! Mix up some saltwater to mold and shape it. As you do, listen to some watery music and focus on the Old Woman of the Sea. Try to capture her image in the sand and as you do, you will capture her magical power in your heart.
If you live anywhere near a beach, today’s a perfect time to practice sand and water magic. Write a symbol in the sand describing what you hope to achieve, then let the tide carry it to the Old Woman for an answer. Or, step into the surf and let the goddess draw away your tension and anxiety into her watery depths.”
(Patricia Telesco, “365 Goddess: a daily guide to the magic and inspiration of the goddess”.)
“Old Woman of the Sea is the Salinan Goddess of water, particularly the ocean and its power. The Salinan tribes of California told a flood story as follows: At the beginning of the world, Eagle was chief among the animals. Old Woman of the Sea was jealous of his power and plotted against him.
One day, She came on to the land with Her basket, which held the sea. She poured the water out, covering almost all of the land—everything was covered except for the top of one mountain, where all the animals gathered. Eagle asked Puma to give him some of his whiskers, from which he made a lariat. Eagle lassoed the basket away from Old Woman of the Sea. Without Her basket, Old Woman of the Sea died and the water stopped rising. Eagle then had Kingfisher dive down into the water and fetch some mud, from which he formed the world.
Eagle then formed humans out of elderberry branches; when he breathed on them, they came to life and became the Salinan people.” 
Sabrina. Goddess A Day, “Old Woman of the Sea“.
Smith, Evans Lansing & Nathan Robert Brown. The Complete Idiot’s Guide to World Mythology, “Eagle, Cunning Defender of Creation (Salinan)“.
Westfall, Vern A. The Many Faces of Creation: A History of Man’s Search for His Place and Purpose in the Universe, “A Salinan Indian Myth” (p. 45).