Complex sentence: Eggs are laid in yellow capsules in suitable crevices on the shore in April and May, and the young feed on unfertilised eggs before emerging as almost fully-formed but very small replicas of adults.
Split into simpler sentences: Eggs are laid in yellow capsules in suitable crevices on the shore in April and May. The young feed on unfertilised eggs before emerging from the egg capsules as almost fully-formed but very small replicas of adults.