Saturday, Aug. 7, 2021, Louis Martinez, 19, of Ortonville , set a new state record for the largest Chinook salmon ever caught in Michigan at 47.86 pounds and 47½ inches. The previous record — a Chinook salmon of just over 46 pounds caught on the Grand River in Kent County — had stood for 43 years.The 19-year-old Martinez, on his first fishing expedition for salmon, battled to pull the record-setting fish in for some 30 minutes off the lake's Big Sable Point.

The so-called "teeth" on the sawfish's snout are not actually teeth. They are modified scales. A sawfish's real teeth are located inside its mouth, which is on the fish's underside.

Any sea snake species have more venom than the average cobra or rattlesnake. However, bites are extremely rare. Sea snakes are surprisingly docile and usually only bite when threatened or compromised. Fishermen sustain most of the world's recorded sea snake bites. These mostly occur when they need to remove sea snakes from their nets or accidentally step on them in the water.

Great barracudas are naturally inquisitive. Because they hunt mainly by sight, barracudas sometimes attempt to steal fish from spear fishers or approach divers, mistaking the glint of a diving knife as a shiny fish. Despite this behavior, barracudas rarely attack humans unprovoked.

Hydrothermal vents are the result of seawater percolating down through fissures in the ocean crust in the vicinity of spreading centers or subduction zones (places on Earth where two tectonic plates move away or towards one another). The cold seawater is heated by hot magma and reemerges to form the vents. Seawater in hydrothermal vents may reach temperatures of over 700° Fahrenheit. Hot seawater in hydrothermal vents does not boil because of the extreme pressure at the depths where the vents are formed.

The basking shark's common name derives from its habit of feeding at the surface, appearing to be basking in the warmer water there. It has anatomical adaptations for filter feeding, such as a greatly enlarged mouth and highly developed gill rakers. They weigh between 6,600 and 13,000 pounds. Although it has hundreds of small teeth, the basking shark does not use them when feeding; instead, it usually swims with its mouth open and catches whatever plankton is filtered through. It is one of three plankton-eating sharks along with the whale shark and megamouth shark.

In 2013, a pacu specimen was found by a fisherman in Denmark which led to media reports mistakenly warning that the fish could attack male testicles. The reports were based on a joke that was not meant to be taken seriously. However, just the mere thought of such a creature existing sent chilling fear down the spines of men worldwide, leading the rumor to persist.

The candiru, (Vandellia cirrhosa), is a scaleless, parasitic catfish of the family Trichomycteridae found in the Amazon River region. It is translucent and eellike, and it grows to a length of about 2.5 cm (1 inch). The candiru feeds on blood and is commonly found in the gill cavities of other fishes. It sometimes also attacks humans and has been known to enter the urethras of bathers and swimming animals. Once in the passage, it erects the short spines on its gill covers and may thereby cause inflammation, hemorrhage, and even death to the victim.

The guppy is named after Robert John Lechmere Guppy, a researcher and geologist with, interestingly, no formal scientific training. Guppy was credited with discovering the fish in Trinidad in 1866, according to the National Institute of Higher Education, Research, Science and Technology. Prior to Guppy, W.C.H. Peters originally discovered the fish in Berlin, where it was overlooked.

The horse conch (Triplofusus giganteus) is considered the largest sea snail in Florida and the United States, growing up to two feet in length. Although they are the official state seashell of Florida, they can be found all along the Atlantic coast, from Florida to North Carolina and in the shallow waters of the Yucatan Peninsula. If their size is any indication of their diet, the horse conch is carnivorous, preying on smaller sea snails and bivalves, smothering prey with their muscular foot. Their shells are bright orange that, interestingly enough, turns white/pale orange with age.