So. Resident orcas are touchy-feely all the time. They touch each other as they swim. They seem to be holding hands, or rather touching their pec fins as they travel in unison. They bite off lengths of kelp, placing the kelp between them to rub along their sides.
https://www.theguardian.com/environment/2025/jun/23/killer-whales-kelp-grooming-tool-use?