Exploring the swim-through tunnels of Cuas Gorm, beneath Puffin Island, reveals all kinds of critters that prefer the dark, or those simply taking refuge until nightfall.

Normally shy and skittish, this lobster seemed perfectly at home as my bright lights pierced its shadowy den. I managed to bring my lens within a few centimetres of that imposing claw, and all I received in return was a slow, deliberate, warning wave.

You’d be a little unsettled too if you had a claw that massive to wield in your defence. I suppose size really does matter.

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