Biology: The average length of a Skipjack Tuna is 32 inches long (80cm) and weigh anywhere between

One of the distinct features of any common resource is that it is a “non-excludable good1”, meaning no one can be prevented from using what is available. As discussed, the consequence of this scenario is that it will produce a socially inefficient outcome. There are differing theories on how to achieve an economically feasible marginal cost and marginal social benefit equilibrium. The difficulty, of course, is to determine what the socially optimal supply level for Bluefin Tuna should be in relation to fish stock restoration and future sustainability as well as empowering the global community to act in unison. The discussion here

The dorsal fin is triangular, and has been know to grow in excess of 6 feet in length on males, but grow no more than 3 feet on females. (Martin) The pectoral fins of the orca can measure up to one sixth of it’s body length and is in the shape of a paddle. The orca usually have 40-50 conical teeth which measure over 2 inches in length, and has a perfect fit with the opposite set which makes it an excellent hunter. Although the teeth are robust, they do a lot of work through the years because older orcas have been known to have teeth worn down to the gum tissue (Haley.) The tongue of a killer whale has been known to weigh in excess of 2 tons (Martin.) They have been known to be fearless hunter, and a fast predator. Some say the ferocity of the killer whale exceeds that of the great white shark, which makes it one of the most feared in ocean life.

Instead of keeping the dolphins in the nets that they catch the other fish with, they are required to release the dolphins from the net as soon as possible(NOAA 5). This is done carefully so that “the dolphins are released alive(NOAA 6).” This allows more dolphins, despite still being bycatch, to live through the process and carry on with their lives. They also catch tuna in ways other than following dolphins, such as using logs or tuna caught on a trip in which no dolphins are harmed(NOAA 12). This type of tuna fishing allows fishing industries to put the Dolphin-Safe label on their tuna(NOAA 11). Fishing industries have already taken the necessary actions to stop cetacean bycatch as much as they can. How much they have changed their gear and their methods in order to compensate for the cetaceans supports that cetacean bycatch is no longer an

Characteristics - Yellowfin bream have a silver to olive-green body with yellowish pectoral, ventral and anal fins. They are opportunistic feeders with their diet including small crabs, prawns, molluscs, pipis and small fish.

The earliest accounts of overfishing occurred in the 1800s, when the demand of whale blubber nearly wiped out the whale populations. In the mid 1900s, the harvesting of Atlantic cod, herring, and California sardines drove them to the brink of extinction. These high disruptions cause regional depletions of animal resources which is starting to cause a global problem. There has never been a more urgent time for fishing nations to make a commitment towards the sustainability of our oceans. More than 80% of the world’s fisheries have been, or are being pushed beyond their limits and are in dire need of strict management plans. Populations of fish and elasmobranch fish such as tuna, grouper and sharks have been declining to the point where the survival

They feed during the day and at night on fishes and cephalopods, and they are known to attack smaller dolphins that are involved in the tuna purse-seine fishery in the Pacific Ocean.[4]

The allusive bluefin tuna is one of the largest, fastest and highly sought after fish in the wild sea. The Bluefin tuna can weigh over half a ton, grow to over four metres in length, and dive to depths of 1,000 metres. They can reach speeds of 70 miles an hour and even raise their body temperature far above that of the surrounding water in order to traverse arctic waters. They are among the most ambitiously migratory of all fish, with some tagged bluefin being tracked swimming from North American to European waters several times a year. The bluefin tuna is unique, a perfectly adapted products of evolution. They are also dangerously close to becoming extinct (Brown). Today, the bluefin tuna has been fished out by 97 percent from pre-fishing

A menhaden has a gray/silver body and has one large black dot behind the gills (Humeral Spot). When a menhaden is fully grown, they average at about 15 inches long. They can filter up to 7 gallons of water per minute as an adult. You may see a

Bull sharks grow to a length of about 11.5 feet and can weigh up to about 500 pounds. Females are larger on average than males. Bull sharks have gray back and sides, a white underside, large first dorsal fin and pectoral fins, and small eyes for their size. Less keen eyesight is another reason why they may confuse humans with more tasty prey.

This species, which has the brightest colors of all other types of tunas, is so-named for its golden-yellow stripe on the fish’s upper sides, along with its bright-yellow fins. Some of the largest yellowfin tuna, weighing more than 200 pounds, can be found here in the waters of Pedasi.

Oceanic Victor claim that the tuna cage will not attract any more sharks than usual, which is odd to say as in other circumstances in tuna pens shark wranglers have been hired to cut free sharks that have been stuck in the nets.[4] “Tuna cages attract sharks, which are drawn to fish which sometimes die in the pens and settle in the bottoms of the floating nets. Inquisitive sharks may bite holes in nets and enter the cages or become entangled in the nets and subsequently become distressed or drown. In response, employees of tuna ranching operations will either enter the water and attempt to wrestle the sharks out of the pens, or kill the shark. Species known to interact with southern bluefin tuna operations include hammerhead sharks, bronze whalers and great white sharks. The latter species is protected under federal Australian legislation while the former two are not. Some of these interactions are shown in the documentary film, Tuna Wranglers (2007).” [3]

Blacktip Reef sharks are unique organisms that appear as the way their name describes it. The sharks have black tips on its caudal and dorsal fins, as well as angled saw-like teeth and a round and small snout. Other fins that this fish has is its two pectoral fins, pelvic fin, and an anal fin. These sharks can grow to be six to seven-feet long and have white bellies and dark backs, this allows the shark to disguise itself with the obscured seafloor and the lighter ocean surface.

The smalltooth sawfish Pristis pectinata (Latham 1794) species are a large batoid elasmobranch that prefers very specific habitats (Simpfendorfer et al., 2010). They are also a K-selected species, which means that the smalltooth have a late maturity, a small pup size and a slow growth rate (Seitz & Poulakis, 2006). The smalltooth sawfish species can be identified from the undefined or undeveloped lower caudal fin (Gómez-Rodríguez et al., 2014). Another identifier is the first dorsal fin is in line with the beginning of the pelvic fin (Gómez-Rodríguez et al., 2014). Unlike the other sawfish, the P. pectinata have about 20 to 34 rostral teeth on the saw, which is more than most species (Gómez-Rodríguez et al., 2014).

A fishery by definition, is “the occupation, industry, or season of taking fish or other sea animals (shrimp, squid, clams) and selling them for profit” (Webster Dictionary). Atlantic Cod used to be considered as one of the richest fisheries in the world. Atlantic Cod, scientifically known as,Gadus morhua, are heavily bodied, blunt snouted fish that are typically brown or grayish in color with a series of spots located on their bodies along with a pale lateral line. This species of fish have a schooling behavior when feeding but remain isolated when traveling. The Atlantic Cod once densely populated the waters of the Atlantic ocean, from Greenland to North Carolina. Despite the wide range in location, Atlantic Cod are a nonmigratory species

So if you spot a group of any of these, there are likely to be some tuna nearby. Found in tropical and sub-tropical waters, yellowfin are a prize catch due to their speed and strength. They're a challenging catch that's delicious too.