Completing the California Coastal Trail requires resolving issues that include environmental protection, private and
quasi-public ownership of lands along the shoreline, and cooperation among many agencies and individuals. The
coastal environment is fragile, and the trail must not threaten natural habitat. The coast is home to endangered species such as the
California least tern, and has fragile
tide pools, beaches visited by
elephant seals to bear and raise their pups, and areas of sensitive vegetation. The trail aims to prevent people from entering sensitive sites, yet still bring visitors within view of other sights to educate them on the shoreline ecosystem. Trail developers believe that informing people spreads the idea of respecting and protecting the environment. Over the years, people have built many structures too close to the shoreline. As a result, they became
threatened by the ocean's force, and owners built
revetments as a defense. However, the armoring has severely narrowed some beaches. Public access to the beaches has also been reduced in areas where development exists in an unbroken line contiguous to the beach. Properties act as barriers to the public by preventing entrance to the shore. Vertical access is also restricted, stopping public roads leading to the shoreline. Coastal land ownership is divided among many individuals, companies, and organizations. To unify the trail, developers of the California Coastal Trail must ask all owners to cooperate. Several agencies—state, community, and federal—along with quasi-public land-holders must communicate and discover ways to increase coastline access. ==Implementation==