Slime mould?

Slime mould?

Observation - Slime mould? - UK and Ireland. Description: Is this a slime mould or some kind of fungus? Spotted in a dark damp tunnel. Very wet looking and salmon-pink in colour (photo looks more orange)

Is this a slime mould or some kind of fungus? Spotted in a dark damp tunnel. Very wet looking and salmon-pink in colour (photo looks more orange)