It was allies who had dolphins in Red Alert 2. Soviets had giant squids as a comparable sea asset.
Soviets got giant squids, subs (because sneaky commies), flak ships, and missile cruisers. Meanwhile allies got dolphins (which could easily take down squids in a group), destroyers (sub hunting, could see subs and launch helicopter/plane), aegis cruisers (anti-missile defense), and aircraft carriers. Both sides also got hovercraft.
I have to agree. Many imagine a big dramatic implosion where the US just loses power and kind of collapses in a heap arguing with itself which isn't likely to happen. The imperial boomerang is already coming home with heightened repression, police state, surveillance. Think of the children bills, VPN bans coming in not just the US but the EU (it's vassal) so there is nowhere in the western world to run and the rest of the world can just be blocked or you can be black-bagged in the night for being a commie for using a non-western VPN (none such that are no-logs and unlimited* exist that I'm aware of funnily enough).
*I exclude criminal network VPNs that require high costs and are for cybercrime use and would be impractical for your average torrent user or privacy seeker to use.
But the empire will endure, transform, repress at home to keep the line going up and lash out as much as it can externally at free African states, Latin America, Asia, etc. And it will be strong enough even if this is part of a final decline to keep doing this and repressing at home for decades IMO. Of course Lenin himself thought he'd never live to see the revolution so things could always change but the current structure of problems for the US barring new developments doesn't seem to lend itself to anything that dramatic, just the US putting on a new outfit and tightening the chains on the domestic proles.