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In the journal Marine Biology, lead author Dr. Evan D’Alessandro and University of Miami Rosenstiel School of Marine & Atmospheric Science colleagues Drs.
Read moreIf you are participating in an organized “shark diving experience”, you may feel that the operator’s knowledge is sufficient and that you can sit back and watch the show. It’s important to remember that every shark interaction is different.
Read moreNeurons consist of a somatic cell body containing the nucleus with DNA, and several cell organelles in the cytoplasma surrounding the nucleus (see Figure 1). The somatic part has many dendritic ends who receive signals from many other neurons. A long axon runs from the somatic part of the neuron, where the electric nerve signal travels with an astonishing speed of about 360km per hour. This electrical signal finalizes its axonal journey into many synaptic ends, where it manages to trigger synaptic secretions of chemicals (neurotransmitters: e.g.
Read moreNew Zealand is a centre of biodiversity for marine sponges," NIWA's Dr Michelle Kelly said.
Read morePalaeontologists have discovered exceptionally preserved fossil eyes of the top predator in the Cambrian ocean from the fearsome metre-long Anomalocaris that lived 500 million years ago
Read moreResearchers have discovered that differences in the patterned clicks of sperm whale communication may lean towards culture rather than genetics.
Read moreItalian scientists report that most of them were introduced in the 1980s and 1990s, whereas in the last few years the number of new records has decreased.
Read moreIt has been a widespread belief that marine mammals do not struggle, as human divers do, with decompression sickness - "the bends" - when ascending from great depths.
Read moreSome related slugs also engulf chloroplasts but E. chlorotica alone preserves the little green photosynthetic organelles called chloroplasts, from the algae it eats in working order for a whole slug lifetime of nearly a year.
Read moreLeaving Ottawa in the throes of a sultry 28 degree heat wave, our next landing is at Iqualuit, some four hours later, where a quick foray outside into freezing temperatures for a cigarette, confirms our arrival in the high arctic.
Read moreDiving the North Sea is always an adventure. Even though the weather can be unpredictable, more and more divers have started to explore the wreck sites each year. But wreck diving can be dangerous, too. I have dived the wrecks of my North Sea for over a decade now, and I have seen the number of lines, hooks, sinkers and nets explode. On several occasions, my slow swimming exploration over a wreck was suddenly interrupted—something held me back. It could be a line, a line and hook, or a fine-mesh net that was almost invisible.
Read moreMy visit to Silver Bank is aboard the Turks and Caicos Aggressor II, one of only three vessels with the necessary permit to enter the sanctuary.
Read moreNot only has it importance for the heat transmission, for example, from the seas to the land and vice versa, and thus affecting global climate, but it is of the greatest importance on the types of life that have evolved in these waters.
Read more“Dangerous” can be circumstances and wrong attitudes like harassing or provoking them, or else disregarding other basic safety rules such as not spear-fishing in their presence.
Read moreIn America, New Zealand and Australia mangroves extend to the subtropical zone, and they have their range limits at the most southern point of Australia.
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