"Tuna" are several species of
ocean-dwelling fish in the family Scombridae, mostly in the genus Thunnus. Tunas
are fast swimmers - have been clocked at 77 km/h (48 mph) -and include several
species that are warm-blooded. Unlike most fish species, which have white flesh,
the flesh of tuna is pink to dark red. This is because tuna muscle tissue
contains greater quantities of myoglobin, an oxygen-binding molecule.
Some of the larger tuna
species such as the bluefin tuna can raise their blood temperature above
the water temperature with muscular activity. This enables them to live in
cooler waters and survive a wider range of circumstances.
Tuna are plentiful in
Bermuda's water and we catch one nearly every day on Reel Hot!
