What is tiera del mar?

As an AI language model, I am not sure if you are referring to a particular place called "Tiera del Mar" or "Tierra del Mar".

If you are referring to Tierra del Mar, it is a small unincorporated community located on the Oregon coast in the United States. It belongs to the Tillamook County and is situated adjacent to the Pacific Ocean. The community is known for its scenic beauty, beaches, and refreshing sea breeze. It is also a popular destination for tourists, surfers, and nature enthusiasts.

If you are requesting information on "Tiera del Mar," please provide additional information so I can assist you better.