If you’re planning a big game fishing trip, you’ve probably wondered about the marlin fishing in wa vs sailfish debate. Both are iconic billfish known for their incredible speed, spectacular aerial displays, and hard-fighting nature. While they may look similar at first glance, marlin and sailfish differ significantly in size, appearance, behavior, habitat, and the challenge they present to anglers.
At Innkeeper Sport Fishing, we regularly target both marlin and sailfish in the world-class waters off Exmouth, Western Australia. Thanks to the proximity of the continental shelf and Ningaloo Reef, anglers have the rare opportunity to pursue multiple billfish species in a single destination.
Here’s everything you need to know before your next offshore adventure.
Marlin vs Sailfish at a Glance
| Feature | Marlin | Sailfish |
| Average Length | 8–14 feet | 5–10 feet |
| Average Weight | 200–1,500+ lbs | 50–220 lbs |
| Top Speed | Up to 50 mph | Up to 68 mph |
| Distinctive Feature | Thick spear-like bill and rigid dorsal fin | Large sail-shaped dorsal fin |
| Fighting Style | Deep, powerful runs | Fast runs and spectacular jumps |
| Habitat | Deep offshore waters | Coastal offshore waters and reef edges |
Appearance
The easiest way to distinguish these two billfish is by their dorsal fins.
A sailfish has an enormous sail-like dorsal fin that stretches nearly the length of its body. When excited or hunting, this sail expands dramatically, making the fish appear much larger.
A marlin, by comparison, has a much smaller, rigid dorsal fin and a thicker, more muscular body. Its spear (bill) is generally longer and sturdier, built for stunning schools of baitfish.
Marlin also tend to have broader shoulders and a more powerful tail section, reflecting their incredible strength.
Size and Weight
One of the biggest differences between marlin and sailfish is their size.
Blue marlin are among the largest predatory fish in the ocean. Mature females can exceed 1,000 pounds, with some trophy fish weighing well over that mark.
Sailfish are considerably smaller. Most weigh between 60 and 150 pounds, although larger specimens over 200 pounds are occasionally caught.
If your goal is battling one of the ocean’s true giants, marlin are the clear winner.
Speed
Many people ask:
Is a sailfish faster than a marlin?
Yes.
Sailfish are widely regarded as the fastest fish in the ocean, capable of bursts approaching 68 mph (110 km/h). Their streamlined bodies and enormous dorsal fins help them corral baitfish before attacking.
Marlin are also exceptionally fast, often reaching speeds around 50 mph, but rely more on brute strength than outright speed.
For anglers, this means sailfish often deliver blistering first runs and spectacular surface action, while marlin combine speed with incredible power.
Habitat
Although both species inhabit tropical and subtropical oceans, they prefer different environments.
Marlin
Marlin typically inhabit:
- Deep offshore waters
- Continental shelf drop-offs
- Ocean canyons
- Seamounts
- Blue water far from shore
Sailfish
Sailfish are more commonly found:
- Around reefs
- Along current lines
- Near bait schools
- Continental shelf edges
- Slightly closer to shore than marlin
Exmouth is unique because anglers can quickly access both environments thanks to the nearby continental shelf and Ningaloo Reef, making it one of Australia’s premier billfish destinations.
Fighting Ability
Every experienced angler has an opinion about which fish provides the better fight.
Marlin Fight
Marlin rely on:
- Raw power
- Long deep runs
- Incredible endurance
- Heavy drag pressure
Landing a large blue marlin can take several hours, requiring teamwork, patience, and determination.
Sailfish Fight
Sailfish deliver:
- Explosive speed
- Repeated jumps
- Acrobatic head shakes
- Rapid direction changes
They’re often considered one of the most entertaining fish to catch because they’re constantly airborne.
Neither fight is “better”—they’re simply different.
Feeding Behavior
Both species are apex predators.
Their diet includes:
- Mackerel
- Flying fish
- Tuna
- Squid
- Small pelagic fish
Sailfish often hunt cooperatively, using their raised sail to herd baitfish into tight schools before slashing through them with their bills.
Marlin generally hunt alone, using their immense power to stun prey before returning to feed.
Which Is Harder to Catch?
This depends on your experience.
Marlin
Marlin require:
- Heavy tackle
- Offshore trolling
- Patience
- Physical endurance
A single strike can change your entire day.
Sailfish
Although smaller, sailfish are:
- Extremely fast
- Highly acrobatic
- Skilled at throwing hooks
Many anglers find sailfish technically challenging despite their lighter weight.
Species Found Around Exmouth
Exmouth offers some of Australia’s finest billfishing opportunities.
Depending on the season, anglers may encounter:
- Blue marlin
- Black marlin
- Striped marlin
- Indo-Pacific sailfish
- Yellowfin tuna
- Wahoo
- Mahi mahi
The combination of deep blue water, nearby reef systems, and seasonal bait migrations creates exceptional fishing opportunities throughout much of the year.
Conservation
Modern sport fishing places strong emphasis on conservation.
At leading game fishing destinations, catch-and-release practices help maintain healthy billfish populations while allowing anglers to enjoy the thrill of the fight.
Proper handling techniques, circle hooks where appropriate, and minimizing fight times all contribute to successful releases and sustainable fisheries.
Marlin vs Sailfish: Which Should You Target?
The answer depends on the experience you’re after.
Choose marlin if you want:
- The chance at a once-in-a-lifetime trophy
- Maximum pulling power
- Heavy tackle excitement
- A true endurance challenge
Choose sailfish if you prefer:
- Incredible speed
- Frequent jumps
- Light tackle action
- High numbers of bites
The best part?
With an experienced crew fishing the productive waters off Exmouth, you may have the opportunity to target both species during your visit.
Experience World-Class Billfishing with Innkeeper Sport Fishing
Whether you’re chasing your first sailfish or dreaming of landing a trophy blue marlin, Innkeeper Sport Fishing provides unforgettable offshore adventures in one of Australia’s premier game fishing destinations.
Our experienced crew, premium tackle, and local knowledge maximize your chances of connecting with some of the ocean’s most exciting sportfish. From heavy-tackle marlin to sight-casting sailfish in Exmouth Gulf, every trip is designed to deliver an unforgettable experience on the water.
FAQ
Is a sailfish faster than a marlin?
Yes. Sailfish are generally considered the fastest fish in the ocean, reaching speeds of up to 68 mph.
Which is bigger, marlin or sailfish?
Marlin are significantly larger and heavier, with blue marlin commonly exceeding 1,000 pounds.
Are marlin more difficult to catch?
Marlin demand heavier tackle and greater endurance, while sailfish require quick reactions due to their speed and acrobatic behavior.
Can you catch both marlin and sailfish in Exmouth? Yes. Exmouth’s unique offshore environment supports multiple billfish species, making it one of Australia’s premier destinations for both marlin and sailfish fishing.