Constantia crab

I’m still wondering about that crab we saw yesterday. Under a car. In Constantia.

Thing is, I always thought crabs lived near the sea. (Apart from Coconut crabs, that is.)
And this was some distance away from the sea.

I’ve been doing some rudimentary calculations and worked out that the most accessible sea to Alphen Drive is about 12.4km away.

The route the crab may have taken up the M3.

There is sea nearer than that as the crow flies, but it’s over a massive mountain and anyway, crabs can’t fly.
And bearing in mind that this crab was only about 8cm across, that 12.4km is the equivalent of you or I walking to the moon.

So what exactly was this crab doing under a car in Constantia?
Do we get land crabs in South Africa? In Cape Town?
Or was it just on holiday? Constantia’s Green Belt is very pretty.

Google has been unhelpful and I’m not exactly sure who else to ask. Especially after some of the results I got when I searched for information about “crabs” on the internet. Goodness me.

I’m quite sure that’s not the kind of thing you’d find in a nice suburb like Constantia.

UPDATE: This tweet leads me to look into Potamidae spp. A-ha!