Generally, swimming is impossible because of cold temperatures and dangerous currents. Wide, sandy beaches. Pocket beaches in rocky areas. Large waves break onshore, which makes for good surfing. Swimming is challenging to dangerous.
Rip currents can pose a threat.
Fine white sand, very coarse sand, or even cobbles. Some beaches are sand on top of hard rock. Hypothermia is a major concern for any swimmer. A comprehensive database for 2000 recreation sites for parks, forests and public resources times since August 9, 1997.