Islam was founded by Mohammad, who was born in 579CE in the city of Mecca, which was at that time the central city of the Arabian Peninusla. It is through Kedar, second son of Ishmael that Muslim genealogists trace the ancestry of Mohammed.
Good for you for taking the time to ask. You'll find this board to be pretty responsive to people so if you have other questions, throw them out there. Main Beach in Laguna is not a difficult beach for swimming. It is a shallow breaking beach with little or no surfing. There are numerous other coves along the shore line that that are swimable depending upon your ability level. Some have surfing around them, some don't.
Swimming Beaches. Green Lake Park Beaches. Green Lake has two popular swimming beaches: East Green Lake Beach and West Green Lake Beach. Amenities include a play area for children, bathrooms, basketball courts, swimming rafts, diving boards and lifeguards on duty in the summer. Parking is available at each beach and the park is easily accessible by bicycle.