
Hippo
A floating boulder with kitchen-knife tusks.
Hippo vs Walrus
Tonight's science rumble is set in the picnic meadow, sandwiches evacuated. No snacks were harmed.
Hippo
Hippopotamus amphibius
Hippo sweat looks reddish. People called it blood-sweat. It is really a natural sunscreen.
Hippos graze grass at night. By day they soak and... argue.
Walrus
Odobenus rosmarus
A walrus mustache has hundreds of whiskers, each a sensor.
Clams, mostly. Sensitive whiskers find shells in the dark mud.
Who do YOU think wins?

Walrus
A tusked sofa that rules the ice.