HUNDREDS of whelk capsules have been spotted across our coastlines in the last month as spawning season takes hold.

Sightings of these large empty egg capsules have been reported as Highcliffe and Shell Bay.

The common whelk lives on sandy seabeds below the low tide mark and is the largest sea snail found in our waters.

Spawning takes place from October to May, copulation occurs and once fertilised, females move rocks, shells or stones to attach their eggs.

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Several females will group capsules together but not all will develop; some will act as food for growing embryos. Development occurs within the capsules until fully formed whelks hatch in the winter, usually after around four to five months.

The eggs are inside protective lens shaped capsules which are stuck together in a sponge like mass – each capsule can contain up to 1000 eggs and up to 2000 capsules. Once hatched, these balls of empty egg capsules often wash up on shore.