♆ | Neptune

♆ is an astronomical and astrological symbol representing the planet Neptune.

This planet was named after Neptune, the Roman god of the sea, whose Greek counterpart was Poseidon. Neptune is not a classical planet and was unknown to alchemists. Its existence was predicted by Urbain Le Verrier and it was discovered in 1846 by Johann Gottfried Galle.

According to Wikipedia, it was Le Verrier himself who proposed both the name and the symbol of a trident for the new planet. An alternative symbol, featuring letters “L” and “V” (in honour of Le Verrier), was proposed by François Arago but it never took off.

More photos related to the ocean and sea glass @ Shutterstock.