Luxury yachts worth millions of pounds are the main attraction at the London Boat Show, but it also features some of the latest toys or gadgets for wealthy buyers.
With hundreds of exhibitors on hand at this year's event, yacht owners have plenty of options to keep guests entertained while sailing the Mediterranean or Caribbean.
This year's must-have accessories include a high-performance personal watercraft that can do a top speed of nearly 75mph and a device that allows riders to swim in the sea like a dolphin.

It is even faster on the surface, where it can hit a top speed of nearly 12.5mph.
All riders have to do is point the Seabob in the direction they want to travel and set the speed. If they let go or dive beyond their pre-set limit, the ?7,800 device will stop automatically and float to the surface.

Powered by a high-energy lithium-manganese battery, the Seabob F5 S runs for about 60 minutes before it needs a charge.

Personal watercraft are a superyacht staple and one of the newest and fastest in the world is now one of the most sought-after.
Sea-Doo's RXT-X 300 will be one of the hottest toys when superyachts return to the Mediterranean this spring.
With a top speed of just under 75mph, the beastly machine boasts a supercharged 300-horsepower Rotax engine which has been completely redesigned and is the biggest ever on a Sea-Doo.
Priced at just under ?16,000, is big enough to hold three occupants and powerful enough to pull a wakeboarder or waterskier.

Since he started making them in 1989, Tim Dutton has twice crossed the English Channel in one of his amphibious cars.
At this year's boat show, he displayed two models that can take buyers almost anywhere they choose.
The 2016 Dutton Reef is Dutton's first new model in 14 years and is based on the Ford Fiesta MK8.
Those who want to build it themselves can purchase a kit for ?8,990, plus VAT, or they can splash ?18,958, plus the cost of the car, to have their amphibious vehicle assembled.