Note that quite a few of the eggs are small & probably non-viable.
This female has probably laid about 3-4 times already this season. After laying she returns to sea & mates again (males station themselves offshore of the nesting beaches), possibly also feeding again if given a chance. A large female can complete 5 or 6 of such laying cycles in a season but this clearly exhausts her fat reserves & puts her under great strain. It is thought that breeding females probably don't nest every year.

Studies done on 'managed nests' where the small non-viable eggs are removed reveal that these small eggs fufill a useful function as they pop under pressure preventing excessive compaction of the nest.