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"The Wanderer"

The sea turtle spends its entire life in the water, the only exception being the females who lay their eggs on land.  They travel constantly and are found in all temperate oceans of the world.  They are an ancient creature, having been around even at the time of the dinosaurs. 

The tortoise is a symbol of wisdom and knowledge, and is able to defend itself on its own. It personifies water, the moon, the Earth, time, immortality, and fertility. Creation is associated with the tortoise and it is also believed that the tortoise bears the burden of the whole world.

The turtle has a prominent position as a symbol of steadfastness and tranquility in religion, mythology, and folklore from around the world. A tortoise’s longevity is suggested by its long lifespan and its shell, which was thought to protect it from any foe. In the cosmological myths of several cultures a World Turtle carries the world upon its back or supports the heavens.
— https://en.wikipedia.org/wiki/Cultural_depictions_of_turtles