When it comes to eye-catching fish, the blue marlin is perhaps one of the most vibrant, thanks to a bright, cobalt-blue color and distinctive shape and body. Here, we will learn how to bring these fish to life – read on for everything you need to know!
Tutorial Video
Step-By-Step Images and Instructions
1.

Start with a black fineliner pen and draw a small circle to the right-hand side of your page. Add a small dot in the center of the circle.
2.

Add a curved “S” shaped line above this shape, making sure that the shape is situated in the curve of the ”S”.
3.

Add another shape just above this line, roughly in line with the first.
4.

Now, add another line, parallel to the first curved line, moving from the right-hand point, down below the eye, and curving across to the left.
5.

At the end of the set of parallel lines, add a long, thin semicircle shape.
6.

Then, add two lines inside the semicircle shape, moving from the top of the shape, into the middle – this is the fin of your blue marlin.
7.

Then, continue the parallel lines down beneath the fin, ending the shape in a crescent moon shape.
8.

Add another small, curved shape just below the eyes, on the bottom of the shape of the body.
9.

Bring another line e down from just in front of the second fin and run it parallel down the outside of the body, joining the point at the bottom.
10.

Add a large ”C” shape to the bottom point.
11.

Add another parallel line to the ”C” shape, joining the two lines at the point to create another crescent shape. These are the tail fins.
12.

Draw another, smaller fin from the underbelly.
13.

Add two ”flame” shapes just in front of the tail fins, pointing downwards towards the bottom of the page. Make sure that the back shape is slightly larger than the front.
14.

Now, add a series of long, thin shapes to the top of the body, decreasing in size as you move down the back of the marlin.
15.

Use a series of curved lines to connect these long, thin shapes, to create fins at the top of the marlin.
16.

Add a series of curved lines from the bottom line of the body moving inwards.
17.

Use a red pen to fill in the color of the mouth…
18.

And a light blue pen to add color to the underbelly of the fish.
19.

Take a blue pen and add color to the main body of the fish.
20.

Use a gray pen to fill in the spines of the fins…
21.

And fill in the top fins themselves with a green pen to finish.
Now you have mastered the blue marlin, it’s time to see what other fish are out there – why not try creating your own stunning aquarium of brightly colored vibrant fish?
The blue marlin is perhaps a lesser-known fish, and often gets overlooked by larger and more dramatic fish and sea creatures such as sharks. The blue marlin, however, posts a few impressive statistics of his own – not only is it the largest of the Atlantic marlins, but this fish also boasts a record of being one of the largest fish in the world.
The females are larger than the males, and can reach lengths of up to 14 feet, and weights of more than 1985 pounds! On average, most marlins will be around 11 feet in length, and weigh between 200 and 400 pounds – still a pretty impressive size compared to many other fish!
These stunning creatures are native to the tropical, temperate waters of the Atlantic, Pacific and Indian oceans, and can be easily identified thanks to their vibrant cobalt blue color. Their bellies tend to be a silvery white, and all marlins will have a very pronounced dorsal fin, combined with a long spear-shaped upper jaw – this makes them easy to identify.
Unlike some other fish, marlins will be spent most of their lives far out at sea, and this makes it even more of a treat if you manage to see one. They are fan of warm climates and have been known to follow warmer ocean currents for hundreds, if not thousands, of miles.
This preference for warmth is also reflected in their food choices – they favor mackerel and tuna, which tend to live near the surface, though they will deep dive to eat squid if required!
With a stunning finish and plenty of fascinating habits, there is plenty to learn and enjoy about these bright, beautiful fish!