Wash and dry the cucumbers. Trim away the blossom or stem end of the cucumber and then slice them.
Add water, vinegar, and sea salt together in a saucepan over high heat and bring to a boil. Remove from the heat and cool completely.
Combine cucumber spears, garlic cloves, peppercorn dill seeds, and fresh dill in a large glass jar or container that has a lid.
Pour the cooled vinegar mixture over the cucumbers and other ingredients that are in the jar. Seal the container with a lid and refrigerate for 3 days.