Runner-up; Hon Yen marine ecosystem. Phu Yen, Vietnam. Every year between May and August, the coral of this rich and diverse ecosystem becomes exposed at low tide. (Photo by Truong Hoai Vu/Royal Society of Biology Photography Competition)

Tourists walk amongst beach foam in the wake of cyclonic conditions at Currumbin Beach on December 15, 2020, after wild weather lashed Australia's Northern New South Wales and South East Queensland with heavy rain, strong winds and king tides. (Photo by Patrick Hamilton/AFP Photo)

Blaze, 8, from Swindon, is covered from head to toe as he plays in the mud at Weston-super-Mare beach on August 4, 2019, as the tide recedes and the huge expanse of mud flats cover the beach where holidaymakers enjoy splashing around. (Photo by Ben Birchall/PA Images via Getty Images)

A combination of high tide and strong winds in the coastal city of Saint-Malo, France, resulted in waves as high as apartment blocks on Friday, March 24, 2023. Waves 50 foot (15,24 m) high flooded the streets as they breached sea walls. (Photo by Mathieu Rivrin/Solent News & Photo Agency)

A man takes photos of a high tide seen in the Bay Of Bengal before Cyclone Yaas arrives in Digha, 205km South of Kolkata, Eastern India, 25 May 2021. (Photo by Piyal Adhikary/EPA/EFE)

Decaying fishing trawlers known collectively as The Fleetwood Wrecks, are seen at low tide on the banks of the River Wyre in Fleetwood, Britain on September 26, 2023. (Photo by Lee Smith/Reuters)

Underwater photographer of the year – winner. Dancing Octopus by Gabriel Barathieu (France). Location: Island of Mayotte, off the coast of south-east Africa. “Balletic and malevolent”, one judge said of this octopus, hunting in a lagoon. Barathieu waited until spring tides when there was just 30cm of water on the flats and plenty of light in the shallows. (Photo by Gabriel Barathieu/UPY2017)

In this Saturday, July 14, 2018, file photo, waves caused by high tide envelops a man standing outside his house near the Arabian Sea in Mumbai, India. The man was washed away by the wave and rescued by locals about 100 meters away from the spot. (Photo by Rajanish Kakade/AP Photo)