A technique for subsea intervention operations utilizes a retrievable dynamic seal assembly. The retrievable dynamic seal assembly is deployed toward a seabed and locked into place within a tubular member at a subsea installation. During deployment, the dynamic seal assembly is releasably locked to an intervention tool string coupled to a conveyance. Once the dynamic seal assembly is locked in place within the tubular, the tool string is released and the dynamic seal assembly maintains a seal against the conveyance during an intervention operation.