These remind me a little of Antony Gormley's 'Another Place' statues, which are revealed and submerged with the tide, at Crosby Beach. I wrote a poem about it in The Shipwrecked House, called 'Journeys of Evaporation', which disintegrates on the page.
This new piece, by Jason deCaire Taylor, can be seen in London, and is meant to raise awareness about climate change. It features two suited politicians and two children riding horses. The horse's heads have been replaced by oil-well pumps (also called "horse heads"). It's a little on the nose, but it must be a fantastic thing to see the sculpture be revealed throughout the day....
You can see it in London until 30th September.
For over 10 years, Taylor's work has been inspired by the environment and conservation, and "Rising Tide" is no exception. Two of the riders, dressed in suits, represent politicians and captains of industry, groups Taylor believes aren't doing enough to slow climate change. The remaining two riders are children, representing the generation who will suffer the consequences of their inaction. The horses' heads have been replaced by the heads of oil-well pumps ( often referred to as "horse heads"), a not-so-subtle nod to the detrimental impact of fossil fuels.