Hawaii authorities are investigating after dozens of baby hammerhead sharks were found dead Tuesday near Keehi Lagoon in Honolulu.
The state Division of Conservation and Resources Enforcement has opened an investigation following the discovery of 50 to 100 dead shark pups piled up near La Mariana Sailing Club.
The lagoon is a known birthing location for hammerhead sharks, but it is not natural for shark pups to be found on shore in large numbers, state officials said.
The sharks may have been netted and dumped on land by a fisherman, said Andrew Rossiter, the director of the Waikiki Aquarium.
“To breathe they have to keep moving, so once they’re in the net for even two to three minutes, they’re unable to breathe and they suffocate,” Rossiter told KHON-TV.
Rossiter said he has never seen so many shark pups killed at one time. The state should have tougher laws to prevent the killing, he said.
“When it’s the pupping season and it’s a pupping area, then maybe they should restrict or ban the use of gill nets just for a couple of weeks to give them a chance,” Rossiter said.
Courtesy of yahoo.com
The beaches of the Guardia Urbana of Barcelógroup na has opened an investigation after the emergence of hundreds of fish, most bogas, who have appeared dead floating next to the beach of la Barceloneta.
Agents, in coordination with the Department of renewable marine resources, have collected a score of copies and have transferred them to the Faculty of veterinary medicine of Bellaterra and L’ Aquàrium de Barcelona, where, in a first report, have determined that the fish they were healthy.
Courtesy of lavanguardia.com
Hundreds of dead fish of different species, and other aquatic animals have been found floating in the river Halda for the last couple of days.
The dead fish are posing a serious threat to the aquatic biodiversity of Bangladesh’s largest natural breeding ground for carp.
According to the Department of Fisheries lab, the level of dissolved oxygen (DO) went below 1mg per litre on an average against the required level of at least 5mg per litre.
According to the District Fisheries Office, the level of dissolved oxygen was found low in the two feeder canals of the river. In some points, the level of ammonia was found to be 0.5-1.5ppm against the tolerable limit of 0.01ppm.
The high concentration of ammonia in water makes it difficult for aquatic organisms to sufficiently excrete the toxicant, leading to toxic build-up in internal tissues and blood, which leads to their death.
Humans need air to breathe, and the aquatic organisms need dissolved oxygen to respire. It is necessary for the survival of fish, invertebrates, bacteria, and underwater plants. Dissolved oxygen is also needed for the decomposition of organic matter.
Locals said the water of Halda River turned pitch-black on June 20, spreading the rotten stench of dead fish.
Following the matter, the locals formed a human chain at Madunaghat area on June 23, demanding that the river be saved from industrial pollution.
Courtesy of dhakatribune.com
Hundreds of fish have appeared this morning dead in Santa Pola. A Red Cross volunteer today gave the warning to the Nature Protection Service of the Civil Guard (Seprona) after being on the shore of the beach of La Gola and near the mouth of the Vinalopó River with the accumulated specimens.
The volunteer, from the group of maritime rescue and nature of the Red Cross, Sócrates Fernández, has given the alarm to the Civil Guard, around 10.30 am, when encountering the fish, already in an advanced state of decomposition. Apparently it is mullets.
“In the area of the mouth closest to the beach I was able to count more than 300 fish, but in the innermost part of the river there were thousands,” said the volunteer.
Courtesy of diarioinformacion.com