The Lazarus Effect (1983) is the third science fiction novel set in the Destination: Void universe by the American author Frank Herbert and poet Bill Ransom.

An indeterminate but several hundreds of years after The Jesus Incident the intelligent kelp has been almost totally destroyed, almost all land on Pandora has been submerged, and humanity has divided into two cultures: Islanders and Mermen.

Mermen, who are genetically stable and are much like modern day humans apart from webbed hands and feet, live in underwater cities with better technology, better food, advanced medicine, and an all around higher quality of life than the Islanders.

Part of Gallow's plan involves gaining access to Vata, the human-kelp hybrid (conceived during the previous novel) who has been dreaming since the death of the kelp and who is under Islander control.

Avata, in the form of hylighters, brings old style humans release from untold centuries or millennia of hybernation to the protagonists boat and thence to small regions of dry land the Merman have created and which will be more stable now that the kelp has awakened and is able to control sea currents.