Keep a straight line, otherwise you’ll end up on the rocks,” barks the guide as we carefully line up our two-person kayak between buffeting waves, before paddling determinedly through the centre of the narrow channel.
On either side of us, dark forbidding hulks of limestone protrude from the water like grisly gnarled teeth ready to crunch down mercilessly if we make the mistake of veering off course.
But they’re not claiming us this time as we manage to propel our kayak through the gap to calmer waters beyond, breathing a sigh of relief as we relax and take in the views of this untamed stretch of Caribbean coastline.
We are paddling off the coast of St Kitts on.