pebbly beach; rocky beach
Refers to a beach covered with pebbles or rocks rather than sand. Often used in place names and literary descriptions.
I took a walk on the pebbly beach while listening to the sound of the waves.
このあたりの磯浜は、潮だまりに小さな生き物がたくさんいる。
On the rocky beaches around here, there are many small creatures in the tide pools.
Compound of 磯 (いそ, 'rocky shore') and 浜 (はま, 'beach'). The exact historical derivation is uncertain, but the spelling is conventionally associated with a pebbly or rocky beach.