Some types of giant water bugs lay their eggs
on water plants. In other species the males carry batches of eggs cemented to their backs
until they hatch. This kind of back-brooding helps to ensure hatching success by reducing
the risk of desiccation, increasing aeration, and providing protection from predators. However,
carrying the eggs can make it more difficult for the male to swim.
The nymphs hatch in about 6 days. Watch the nymphs hatching.
Giant water bugs go through several nymph stages for a month to six weeks. They have
an incomplete metamorphosis.