How long are you in the Channel tunnel Eurostar?

How long is the Eurostar in the Channel Tunnel, anyway? Thirty-five minutes underwater? Wow, seriously? That's way shorter than I pictured! I mean, I always imagined it taking forever. The whole thing feels a bit… unnerving, doesn't it? Being that deep, in a train, under the sea? It's kind of terrifying, but also incredibly cool at the same time. Like, what is that feeling, you know? Totally surreal, I bet. Like you're briefly visiting another planet before being spit back out into reality. I'd probably be a total window-gluer, the whole trip. Constantly wondering what's going on above – are there dolphins? Giant squid? Is my phone even getting a signal down there? Reminds me of that time I was on a ferry to Ireland... way less dramatic, obviously, but that constant slightly queasy feeling is something I remember. This though...this is underwater! Crazy!