This mango timekeeper can handle vampire squids

600m below the ocean’s surface, you reach the cusp of the aphotic zone – namely, a place where next to no light penetrates. Which is a shame, because Christopher Ward’s C60 Trident 316L diving watch (from £730) – which is water resistant to that very depth – is quite the looker. Clad in marine-grade stainless steel, its seafaring subtleties (including a trident-shaped second hand) are complemented by a glorious orange hue that’s bound to be appreciated by the various squids and squishy things deep below – if only they could see it. Still, at least you’ll be able to give them accurate time updates, thanks to the reliable Sellita 200-1 mechanical movement.