2019; Coleman et al., 2020b; Fredriksen et al., 2020; Wade et al., 2020). Managed breeding of corals has also had limited success in the laboratory and at small local scales . There is also limited evidence that physiological interventions, such as algal-symbiont or microbiome manipulation, could increase coral thermal tolerance in the field . Employing the natural adaptive capacity of species or individuals in active restoration for corals and kelps with current technology involves fewer risks than assisted evolution or long- distance relocation  . More ambitious engineered interventions like reef shading remain theoretical and not scalable to the reef level . Debate continues on how to apply planned adaptation in cost-effective ways that will accomplish the intended goals .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report