Sunfish around the Isle of Wight - A summer Wildlife Spectacle
- ventnorbaycharters
- Jun 26
- 3 min read
One of the most fascinating marine visitors to the waters around the Isle of Wight is the incredible Ocean Sunfish (Mola mola).
Every summer, these remarkable fish can occasionally be seen in the waters off the island, making them one of the most exciting species encountered during a day at sea.
At Ventnor Bay Charters, we're fortunate to spend countless hours on the water throughout the season, and every trip offers the chance to experience the ever-changing marine environment around the island. While nature is always unpredictable, the summer months are when sunfish are most likely to be present in local waters.
The wildlife is elusive.
The World's Heaviest Bony Fish
The Ocean Sunfish is the largest and heaviest bony fish in the world. Adults can reach over 3 metres in length and weigh more than 2,000 kilograms, although most individuals seen around the UK are considerably smaller.
Their appearance is unlike any other fish. Rather than having a long body and tail, they have a flattened, almost circular shape with large dorsal and anal fins that propel them slowly through the water. Their tiny mouth and distinctive profile make them instantly recognisable.
Why Are They Called Sunfish?
Sunfish are well known for spending time at the sea surface, sometimes lying on their sides. This behaviour is thought to help them warm up after making deep dives into colder water in search of food. It also allows seabirds to remove external parasites, giving the fish a natural "cleaning service."
This habit of basking at the surface is where the name Sunfish comes from.
What Do Sunfish Eat?
Although many people associate sunfish with jellyfish, their diet is far more varied. They feed on jellyfish, salps, small fish, squid, crustaceans and other soft-bodied marine animals.
Their feeding habits help make use of seasonal food sources that become more abundant during the warmer months.
When Are They Found Around the Isle of Wight?
The best time to see sunfish in UK waters is generally between June and September, when sea temperatures rise and food becomes more plentiful.
The south coast of the Isle of Wight, including the waters around Ventnor, provides ideal summer habitat, particularly during periods of calm weather. Sea conditions, water temperature, food availability and natural animal movements all influence where sunfish may be found on any given day.
Respecting Wildlife
Like all wild animals, sunfish should always be observed responsibly. They are protected by good wildlife watching practices, and any encounters should allow the animal to continue its natural behaviour without disturbance.
Every trip at sea is different. Weather, tides and wildlife activity constantly change, making each experience unique. Rather than following a script, every day offers an opportunity to appreciate whatever nature has to offer.
Experience the Isle of Wight from the Water
Exploring the coastline by boat provides a completely different perspective of the Island's spectacular scenery. From dramatic cliffs and hidden coves to the rich variety of marine life that calls these waters home, every journey offers something different to discover.
Whether you're a keen wildlife enthusiast, a photographer or simply looking to enjoy time on the water, spending time at sea is one of the best ways to experience the natural beauty of the Isle of Wight.
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