Whelk egg mass (or embryo capsule?)

Whelk egg mass (or embryo capsule?)

Observation - Whelk egg mass (or embryo capsule?). Description: Strandline egg mass - egg capsules laid in coils to form a spherical mass. Embryo capsule or egg mass?

Strandline egg mass - egg capsules laid in coils to form a spherical mass. Embryo capsule or egg mass?