These unique fish have the nickname "iridescent shark catfish," a seemingly ... raising its dorsal fin above the water. As for iridescence, river catfish have no scales, but their delicate skin ...

A 13-foot 9-inch shark, nicknamed "Contender" by the OCEARCH scientists who tagged it, pinged off the Indian River County coast ... attached to the shark’s dorsal fin moved above water and ...

They have many characteristics in common with sharks, and yet in certain ... of speed to escape predators. Fins: Help a fish move. The top fins are called dorsal fins. If there are two dorsal ...

Several viewers of a TV station in Cedar Rapids spotted a fin in the water a wondered if a shark had swum to Iowa up the Mississippi River. A television station in Cedar Rapids has received ...

One of the study’s authors named the two new species, Etheostoma kimberlae and Etheostoma michellae, after his daughter, ...

Deputy Christopher Aguanno wrote in an incident report obtained by PEOPLE that Eddy’s wife, Margot Dukes Eddy, saw the shark’s dorsal fin, and then saw the water fill with blood.

In a world first, Dr Hawkes’ team have attached front and rear facing cameras to sharks’ dorsal fins. However, as was demonstrated when Landward joined the expedition, it is not a ...

A ping means the Smart Position and Temperature Transmitting Tag (SPOT) attached to the shark’s dorsal fin moved above the water's surface and sent location information to the OCEARCH shark tracker.

The team has attached radios and satellite sensors to two sharks’ dorsal fins. The instruments reveal more about their behavior by recording the swishing of their tails and depths at which they swim, ...

"A large metallic grey dorsal fin signalled a big shark, a short-fin mako," Constantine wrote in the piece published March 11. "But wait, what was that orange patch on its head? A buoy? An injury? We ...