Sunfish

Scientific Name: 
Mola mola

A bizarre fish, silvery grey in colour, flat and circular, with no noticeable tail and two very large fins, one on each side, which make it look like a giant swimming head! The Sunfish is the heaviest bony fish in the sea and sometimes turns up in British waters after storms out at sea. May also be seen from ferries, 'basking' at the surface of the water on its side. Its mouth is adapted into a beak which is uses to feed on jellyfish.

How to identify: 
Unmistakeable.
Where to find it: 
A rare visitor to southern and western parts of the UK, particularly after westerly storms.
How people can help: 

Although not commercially important, Sunfish are a product of bycatch and as a result are under threat from fishing activities. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: up to 4m Weight: up to 2.3 tonnes Average Lifespan: up to 10 years
Conservation status: 
Common.
Did you know?: 
Although it looks like it might be dying, the Sunfish regularly lies at the surface on its side in what appears to be a form of sunbathing. It is thought that it might be regulating its temperature after diving to cooler waters at depths of up to 150 metres during the day, possibly to catch prey. It inhabits warmer water at night, at depths of up to 50 metres. Lying on its side has the added bonus of allowing gulls to land and pick off unwanted parasites.
Seasons: 
Spring
Summer
Autumn
When to see
Start date: 
June
End date: 
August
Image: 

Plaice

Scientific Name: 
Pleuronectes platessa

The Plaice is a diamond-shaped flatfish which lives on the sea bottom, on sandy or gravel shores. Young fish can sometimes be found in rockpools. Plaice are mainly nocturnal, feeding on molluscs and worms which they crush with their strong jaws. During the day, they tend to bury themselves in sand or gravel, lying hidden and well-camouflaged.

How to identify: 
Plaice are distinguished from the other flatfish (of which there are several different species) by their orangey spots and greenish-brown back.
Where to find it: 
Found all around our coasts.
How people can help: 

Plaice are a commercially important species and are under threat from overfishing. You can help by being careful about what you choose in the supermarket - go for sustainably produced fish and shellfish, preferably with the Marine Stewardship Council's logo. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives.

Statistics: 
Length: up to 50cm
Conservation status: 
Classified as a Priority Species in the UK Biodiversity Action Plan.
Did you know?: 
Juvenile Plaice are the same shape as 'normal' fish, but as they mature they start to lay on one side, with their eyes moving together onto the other side.
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December
Image: 
Plaice camouflaged against the sea bed

Lumpsucker

Scientific Name: 
Cyclopterus lumpus

The Lumpsucker is a large, lumpy fish which lives amongst seaweed and rocks around or below the low tide mark. Their pectoral fins form a suction ring that enables them to 'stick' to rocks around the surf zone, preventing it from being washed away by the waves.

How to identify: 
Unmistakeable; rounded, with small lumps and no scales, bluish-grey in colour, the males have an orangey belly.
Where to find it: 
Found all around our coasts but most common around Scotland.
How people can help: 

Lumpsuckers and other small fish provide a vital link in the food chain for many of our rarer species. Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: 30-50cm
Conservation status: 
Common.
Did you know?: 
The Lumpsucker is a favourite food of Otters on the west coast of Scotland and the eggs are commercially harvested as a form of caviar for humans!
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December

Rock Goby

Scientific Name: 
Gobius paganellus

The Rock Goby is a small, elongated, large-headed fish found in rockpools and shallow, rocky seas and is present in waters up to 15 metres deep. On its underside, the pectoral fins are fused to form a sucker which it uses to attach itself to rocks to prevent it being washed away by the waves.

How to identify: 
Gobies differ from blennies in having rounder heads, smaller eyes and two distinct dorsal fins on the back. There are several similar species of goby which can be difficult to tell apart. The Rock Goby is variable in colour, but is usually pale brown with dark bands long its body.
Where to find it: 
Found all around our coasts.
How people can help: 

Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: up to 12cm
Conservation status: 
Common.
Did you know?: 
The female Rock Goby lays up to 7,000 eggs in a 'nest' amongst seaweed and rocks.
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December
Image: 
Rock blenny - Polly Whyte - earthinfocus

Tompot Blenny

Scientific Name: 
Parablennius gattorugine

The Tompot Blenny is a medium-sized, elongated, large-headed, large-eyed fish found in crevices amongst rocks below the low tide line. It has two branched, feathery tentacles on the top of the head, one above each eye. The Tompot is a very inquisitive fish, often approaching scuba divers to have a closer look.

How to identify: 
The largest British blenny. It is orangey-brown in colour, sometimes greenish, with several darker bars running down the body.
Where to find it: 
Found around the south and west coasts.
How people can help: 

Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: up to 30cm
Conservation status: 
Common.
Did you know?: 
The Tompot Blenny has sharp teeth and eats invertebrates like anemones. It breeds in the spring, the males guarding the eggs.
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December
Image: 
Tompot blenny - Polly Whyte - earthinfocus

Shanny

Scientific Name: 
Lipophrys pholis

The Shanny is a small, elongated, large-headed, large-eyed fish found in rockpools and shallow, rocky seas. It can often be spotted hiding under stones and seaweed, emerging at high tide to forage over the shore. It can also be found around man-made structures such as pier pilings.

How to identify: 
Variable in colour, with darker blotches. Distinguished from similar species of blenny by the absence of tentacles on the head, which the others have.
Where to find it: 
Found all around our coasts.
How people can help: 

Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: up to 15cm
Conservation status: 
Common.
Did you know?: 
The Shanny (also known as the 'Common Blenny') eat barnacles, other invertebrates and even seaweed. It uses its paired fins to enable it to crawl under rocks and into crevices to hide. It also lays its eggs under rocks, which the male of the species guards until they are hatched.
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December
Image: 
Shanny - Paul Naylor

Butterfish

Scientific Name: 
Pholis gunnellus

A long, eel-like fish found in seaweeds, crevices and under rocks in rockpools and shallow, rocky seas. Both the males and females of this species take turns to guard their unhatched eggs.

How to identify: 
Unmistakeable. Pale yellowish-orange in colour, with bands of darker brown and white-ringed black spots along the back.
Where to find it: 
Found all around our coasts.
How people can help: 

Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: up to 25cm
Conservation status: 
Common.
Did you know?: 
Named because of its very slimy, buttery skin.
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December
Image: 
Butterfish - Polly Whyte - earthinfocus

Lesser Spotted Dogfish

Scientific Name: 
Scyliorhins canicula

The Lesser Spotted Dogfish is a small shark, so named due to the dark spots and blotches covering its skin. All sharks have very rough skin, covered in hard 'dermal denticles' literally meaning 'tiny skin teeth'. If rubbed the wrong the way, they are very coarse like sandpaper, but provide the shark with an effective chainmail-like protective covering. Dogfish are predators, feeding on shellfish and other small fish.

How to identify: 
The most commonly seen shark, smaller and more spotty than the scarcer Large Spotted Dogfish. Very rough, pale cream skin. Large dark eyes and a small mouth. The eggs cases of the Lesser Spotted Dogfish are known as 'mermaid's purses' are often found washed up onshore.
Where to find it: 
Found all around our coasts.
How people can help: 

Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: up to 75cm Weight: less than 1kg
Conservation status: 
Common.
Did you know?: 
This dogfish has other common names such as 'Rough Hound', 'Small-spotted catshark and also 'Rock Salmon', under which name it sometimes appears on the menu in fish and chip shops.
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December
Image: 
Lesser spotted dogfish

Basking Shark

Scientific Name: 
Cetorhinus maximus

The Basking Shark is the second largest fish in our oceans - its relative the Whale Shark being the biggest. Despite their size, Basking Sharks actually feed on plankton which they filter out of the water, swimming slowly back and forth with their enormous mouths wide open. They are most commonly seen in the summer, when they gather in British waters. Try looking from cliffs or boats offshore in the south and west.

How to identify: 
The large, black, triangular dorsal fin moves slowly through the water, with the tail tip or snout sometimes visible above the waves, too. The Basking Shark has a massive, grey body.
Where to find it: 
Found all around our coasts, but most frequently sited around the south-west of England, Wales, Isle of Man and west coast of Scotland.
How people can help: 

Basking Sharks are seriously threatened by overfishing - they were traditionally caught for their vast livers, but are now a target of the shark fin soup trade. It's thought that Basking Shark populations have decreased by 80 % since the 1950s. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Length: up to 12m Weight: 6 tonnes Average Lifespan: anything from 20-100 years
Conservation status: 
Classified as Vulnerable on the IUCN Red List, listed under CITES Appendix II and classified as a Priority Species in the UK Biodiversity Action Plan.
Did you know?: 
The Basking Shark may be huge but it disappears from the coast in winter, completely foxing scientists as to its whereabouts! Theories include everything from hibernating in deep water to shedding their gill rakes (which help them to feed), but satellite tracking shows that they migrate during all the seasons, so are always on the move.
Seasons: 
Spring
Summer
Autumn
When to see
Start date: 
May
End date: 
September
Image: 
Basking shark feeding on plankton - Andrew Pearson

Sea Potato

Scientific Name: 
Echinocardium cordatum

Also known as the 'Heart Urchin' due to its distinctive shape, this medium-sized sea-urchin is densely covered in fine, beige spines, giving it a hairy appearance. The Sea Potato lives buried in up to 15cm of muddy and sandy sediments from the shore to 200 metres deep.

How to identify: 
The familiar, spine-less, pale brown 'test' (shell) of the dead animal is often washed up on the shore. It is recognisable by the heart shape, dull colour and thin, brittle shell. The animal itself is covered in dense spines and yellow-brown in colour.
Where to find it: 
Found on sandy and muddy shores all round our coasts.
How people can help: 

Sea-urchins and starfish provide a vital link in the food chain for many of our rarer species. Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.

Statistics: 
Diameter: up to 9cm
Conservation status: 
Common.
Did you know?: 
The common name refers to the brittle test that, when washed up on shore, resembles a potato.
Seasons: 
Spring
Summer
Autumn
Winter
When to see
Start date: 
January
End date: 
December
Image: 
Sea potato - Paul Naylor