These guys need to first figure out how to store and convey information. I think this is their biggest obstacle. Whales possibly convey transgenerational knowledge via songs. They need something like that. We humans could possibly assist them in this by placing devices in their environment that could help them get over that hump. They apparently have sense of smell, so maybe something using chemicals for an alphabet, or pictograms. Since they have great visual processing, a combo of chemically coated (from a finite set of smells) image tokens with distinct images (from a finite set of diagrams) could work and possibly convey complex ideas (c x i basic semantic units).
