Enoshima (江の島) is a small island, about 4 km in circumference. Adjacent to the closest beach to Tokyo and Yokohama, the island and the nearby coast are the hub of a popular resort area. Benzaiten, the goddess of music and entertainment, is also enshrined on the island. Enoshima is the center of Shonan, a resort area along the coast of Sagami Bay known for its scenic beauty.
Enoshima's many sights are concentrated on the island of Enoshima itself, in front of the beach and the modern town. Enoshima is blessed with the abundant beauty of nature and sea.
The street that leads from the Enoden and Monorail Station to the beach has souvenir shops and surfer accessories shops. In the same street you will find a Natural Lawson convenience store.
The street on the island that leads up to the shrine has also the typical souvenir shops, but the real specialities can be found right when you leave the bridge: grilled and fresh seafood in every variation is sold there. It's a bit like the Tokyo fishmarket in small if you look at all those creatures that can apparently be eaten.
Enoshima is all about sea sports, particularly surfing. The surf here isn't actually great by most standards, but it's conveniently close to Tokyo and provides an excuse to strut about with an artificial tan, bleached hair and a surfboard under your arm.
Enoshima has a big yacht harbor. Many cruisers are docked there and many university clubs that have their boats.
Recently, a sailing Olympic week was held there.
The small island of Enoshima is attached to the mainland by a causeway, and during low tide you can walk there on exposed sandbars. In addition to the marina there is a small temple and a modern observation tower on the top of the island. If you are not in great shape for the climb, escalators are available for a fee.
Nature and animals are abundant on the island. The classic view of Mt. Fuji as depicted in Japenese art can be seen from Enoshima on clear days. Giant hawks called tombe fill the skies, squawking and diving.
The island is surrounded by high sea cliffs, rocks and tidal pools. The pounding surf and rocks make swimming at the island rather suicidal but many people walk across the exposed rocks, exploring the tidal pools and crab pots.
Access is on the cliff side of the seawall behind the marina or by going over the top of the island. Both routes are exclusive of each other (see below). If you don't mind getting your feet wet you can (at low tide) go around the island from the side of the causeway opposite the marina and return over the top.
(reference: Wikipedia, Wikitravel)