I checked out the pictures, but frankly, they're not much use - they're blurry and only show the flowering tops of the plant. What we need to see are the leaves/stems/foliage, and a clear, focused shot would be good.
However, the likelihood is that the plant is Foeniculum vulgare - good photos will confirm for sure, or you can examine what you see in the links below
Note there is a difference between Florence Fennel and ordinary fennel or Foeniculum vulgare (link below showing Florence Fennel); the former is classed as a vegetable, the latter as a herb. I use the leaves from the herb version in potato or mayonnaise based salads and its very good with fish. You can use the leaves of Florence fennel in a similar fashion, but ordinary fennel does not develop the swollen bulb at the bottom - it just has a rather long tap root or two.
The specimens in your new photos don't show much foliage, so its hard to be absolutely definite that they are Fennel - I suspect they are, and they do grow wild where you live (see link below) but I wouldn't want you to poison yourself eating some lookalike plant. In the link below, you can purchase a small book for wild growing local edibles, and that might be of interest, otherwise, suggest you go and buy yourself a Fennel plant and grow it in your own garden, just to be completely safe. If you just want to use the leaves and not the root, Foeniculum vulgare (or common Fennel) is the one to look for - there is a bronze form, which has brownish leaves, an attractive, feathery looking plant in its own right in the garden. Ensure you get the right planting spot - its next to impossible to move or remove because it has a long tap root, so you need to select the planting site carefully.