I joined the Ocean Memory project in spring 2023 when I attended and presented at the seminar on memory loss on Sapelo Island. My research relevant to ocean memory relates to how marine organisms rely on chemical cues to exchange information, locate appropriate habitat, recognize mates, track down food, and avoid predators. For example, prey such as small crabs and juvenile oysters recognize the odors of larger predatory crabs and fish through the chemistry of predator urine, hiding when danger is detected or growing a strong shell. Offshore, microscopic plankton navigate an otherwise featureless landscape of ocean water, encountering each other’s scent trail. Mate tracking and mate recognition by zooplankton copepods relies not on sight or sound but on perception of the chemical signals and mechanical wakes left by others of their species. The algal prey of copepods take advantage of these inevitable scents to assess risk of predation, upregulating their own defenses which include toxin production, bioluminescence, and splitting apart from other algal cells to evade detection by copepods. The exchange of information in this watery medium is almost entirely chemical, and animals have evolved numerous forms of sensory perception to pick up on dilute and unusual but natural chemical cues.