Which is a faster swimmer ? a Swordfish or a Tuna?

Question

Which is a faster swimmer ? a Swordfish or a Tuna?

Answer 1

Swordfish for sure.

The oversived dorsal fin which 'springs up' when needed acts as a stabilizer allowing the fish to apply full force with its' muscular tail and converts any transverse thrust into forward latural movement. The fish can also control the pitch of the dorsal fin allowing high speed control ie: a very precise rudder.These guys are fast, you'd struggle to get away even in a very fast boat!

Answer 2

A swordfish they a sword ahead of the tuna

Answer 3

Below is a list of sea creatures speed.  I put a * by the ones you asked about.

Maximum Travel Speed of Selected Marine Life

Species (Scientific Name), Mode of Travel

[if other than swimming] Speed (mph)

Abalone (Haliotis), crawling  0.012

Blenny (Zoarces) 0.5

Goby (Gobius minutus) 0.6

Rock Gunnel (Pholis gunnelus) 0.7

Sprat (Clupea sprattus) 1.4

Stickleback (Spinachia spinachia) 1.75

Flounder (Pleuronectes flesus) 2.4

Eel (Anguilla rostrata) 2.4

Plaice (Pleuronectes platessa) 2.9

Searobin (Trigla) 3.1

Herring (Clupea harengus)  3.6

Human (Homo sapiens) 5.04

Sea Trout (Salmo trutta) 5.4

Pacific Salmon (Oncorhynchus) 8

Mackerel (Scomber scombrus) 12

Pacific Salmon (Oncorynchus), leaping 14

Gentoo Penguin (Pygoscelis papua) 17

Bottlenose Dolphin (Tursiops truncatus) 17

Pacific Whitesided Dolphin (Lagenorhynchus obliquidens) 17

Mahi Mahi (Coryphaena hippurus) 20

Market Squid (Loligo opalescens) 20

Leatherback Turtle (Dermochelys coriacea) 22

Common Dolphin (Delphinus delphis) 23.6

Blue Shark (Prionace glauca) 24.5

Pacific Spotted Dolphin (Stenella attenuata) 24.7

California Sea Lion (Zalophus californianus) 25

Fin Whale (Balaenoptera physalus) 25.42

Barracuda (Sphyraena) 27

Blue Whale (Balaenopterus musculus) 29.76

Shortfin Pilot Whale (Globicephala macrorhynchus) 30.4

Shortfin Mako (Isurus oxyrinchus) 31

Dall's Porpoise (Phocaenoides dalli), leaping 34.5

Killer Whale (Orcinus orca) 34.5

Flying Fish (Exocoetidae), gliding 35

Mahi Mahi (Coryphaena hippurus), leaping 37

Bonito (Sarda), leaping 40

**Albacore (Thunnus alalunga), leaping 40

**Blue-fin Tuna (Thunnus thynnus), leaping 43.4

**Yellowfin Tuna (Thunnus albacares), leaping 46.35

Wahoo (Acanthocybium solandri), leaping 47.88

*Marlin (Makaira), leaping 50

**Swordfish (Xiphias gladius), leaping 60

*Sailfish (Istiophorus platypterus), leaping 68