Low Oxygen Levels Impact Marine Invertebrates

With rising global temperatures already lowering marine oxygen levels – to the point of producing and exacerbating coastal ‘dead zones’ – this could become a serious problem.

Many marine invertebrates – just like other animals with functional and complex eyes – depend on vision for survival. It helps them find prey, avoid predators, and locate shelter.

Recent Posts

  • Australian Waters Eyed by Foreign Fishing Interests

    The report says foreign fishing vessels are looking to Australia after stocks elsewhere have been depleted by overfishing. “Australian waters are now in their sights,” the report author Chris Smyth said.

    “Fishing regulations notionally prohibit the entry of foreign fishing vessels, but this has not stopped the approval of foreign super trawlers to fish in Australian waters.”

  • “Marine animals are disappearing at double the rate of land-based species”

    …marine animals like fish, crabs and lobster are already more likely to be living near the threshold of life-threatening temperatures, and because in the ocean, there are fewer places to hide from extreme heat, said Malin Pinsky, lead author of a new study published Wednesday in the journal Nature.

    “These results are stunning, in part because the impacts of climate change on ocean life were virtually ignored just a decade ago,” said Pinsky, an ocean researcher at Rutgers University. The study took a close look at cold-blooded marine species whose body temperatures are dependent on their surroundings.

  • 30 Dead Gray Whales Along West Coast

      Editor’s note: The consistently disturbing news of marine mammals dying off or stranding in mass appears to be a global event. Gray whales are an iconic species that have survived throughout the centuries, including the great whale hunts of the… Read More ›

  • Gulf of Mexico’s Bryde’s Whales Endangered

    Threats to the species include energy exploration and development, oil spills and clean up efforts, vessel strikes, human noise and entanglement in fishing gear. There are less than 100 of the whales left in the northeastern Gulf of Mexico near the De Soto canyon, where the population resides.

  • “…something’s off-kilter around the Bering Strait…”

    n February, southwest winds brought warm air and turned thin sea ice into “snow cone ice” that melted or blew off. When a storm pounded Norton Sound, water on Feb. 12 surged up the Yukon River and into Kotlik, flooding low-lying homes. Lifelong resident Philomena Keyes, 37, awoke to knee-deep water outside her house.

    “This is the first I experienced in my life, a flood that happened in the winter, in February,” Keyes said in a phone interview.

  • Great Barrier Reef Still Struggles for Health

    Editor’s Note:  A recent NY Times report is headlined, “The Great Barrier Reef was Seen as ‘Too Big to Fail.’ A Study Suggests It Isn’t.”  The following is an abstract, “Global warming impairs stock–recruitment dynamics of corals”  released Wednesday in… Read More ›