The Blind Shark is able to remain out of water for extended periods of time (up to 18 hours), this apparent hardiness implies that the species could survive trawl capture more readily than other species if successfully returned to the water. The blind shark is likely to occur in a number of marine protected areas including Queensland’s Moreton Bay Marine Park and several marine parks in New South Wales.
Most mackerel live offshore in the oceanic environment but a few, like the Spanish mackerel (Scomberomorus maculatus), enter bays and can be caught near bridges and piers. Mackerels are prized (and are highly harvested) for their meat, which is often very oily. They are known for their fighting ability, and are an important recreational and commercial fishery. The meat can spoil quickly, especially in the tropics, causing scombroid food poisoning - it must be eaten on the day of capture, unless cured. For this reason, mackerel is the only common salt-cured sushi.
Doctor fish are used for foot cleaning in salons, but as they cannot be cleaned after each use, some people question the hygiene of the practice and call it unsanitary. As a result, they were banned due to public health concerns in several states of the United States and Canadian provinces. These states include Texas, New York, New Jersey, California, Washington, Maine, Massachusetts.
Tope sharks, Galeorhinus galeus, are ovoviviparous (fertilized eggs develop in the female without a yolk-sac placenta). Litter size ranges from 6-52 pups and increases according to the size of the mother. Newborn pups measure 30-36 cm at birth. In Australia, newborns and juveniles aggregate in nurseries found in shallow waters and move into deeper coastal waters during winter after which they return to the nursing grounds.
The Buri (yellowtail) is called by different names depending on its stage of growth. This parallels a custom among warrior and aristocratic families in premodern Japan of conferring adult names to children after their coming-of-age ceremony. Sixteenth-century warlord Oda Nobunaga, for example, was known as Kippōshi as a child, and Takechiyo was the childhood name of Tokugawa Ieyasu—founder of the Tokugawa shogunate. Fish that take on different names as they grow were considered propitious and served when giving someone a sendoff. Before becoming buri, the fish is called wakashi, inada, and warasa in eastern Japan and tsubasu, hamachi, and mejiro in western Japan. Buri is a name reserved for fish over 80 centimeters, while hamachi is used in the west for smaller, cultivated buri. In English, it is called yellowtail or, sometimes, Japanese amberjack.
Requiem Sharks are incredibly fast and effective hunters. Their elongated, torpedo-shaped bodies make them quick and agile swimmers, so they can easily attack any prey. They have a range of food sources depending on their location and species that includes bony fish, squids, octopuses, lobsters, turtles, marine mammals, seabirds, other sharks, and rays. Requiem Sharks are often considered the "garbage cans" of the sea because they will eat almost anything, even non-food items like trash.
The Dead Sea is a popular tourist destination for many reasons, one of which is its medicinal values. The water of the Dead Sea contains 26 beneficial minerals, and the air contains minimal amounts of dust and allergens compared to other places in the world. Apart from dipping in the sea and in sulfur-rich pools in the surrounding spa resorts, many rub themselves with the black mud found at its banks, which is said to relief different skin issues.
The Lithogenes wahari has some incredible adaptations for living in the fast moving water. It possesses a set of highly developed pelvic fins that resemble legs and a large strong mouth both of which allow the fish to cling and even climb up rocks to stay put in the powerful current. Indeed, when American Museum of Natural History ichthyologist Scott Schaefer tracked the climbing catfish to a tributary of the Orinoco River, he merely had to pluck the specimens off the rocks where they were hanging on tight.
Electric rays are a group of rays that can produce an electric discharge, ranging from as little as 8 volts up to 220 volts depending on species. There are 69 species in four subfamilies. These rays have battery-like electric organs on both sides of their heads, which can make a powerful electric shock. They use this shock to stun their prey and for their own self defense.
For many male mudskippers, finding a mate is all about how high he can fly. Despite the muddy and not-so-romantic environment, a high jump can get him noticed in the mudskipper dating pool. Amazingly, these fish can jump up to two feet above the mud, all in the name of love. Mudskippers are also quite territorial, so spotting a duel between a couple of mudskippers is not uncommon if a neighbor gets too close. The skirmish typically includes their mouths gaping open and their dorsal fins being raised while they leap towards each other in aggression; some species of mudskipper even let out a fish equivalent to a battle cry.