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Sharks home in on faint bioelectric fields generated by the bodies of their prey which they pick up using sensitive detectors on their snouts.
Read moreThe vampire squid (Vampyroteuthis infernalis) is a small, deep-sea cephalopod found throughout the temperate and tropical oceans of the world.
Read moreHumboldt squid live in the very deep waters of the ocean. Knowledge about their lives in the abyss is very limited. Most of the research concerning their behaviour has been done in shallower waters.
Read moreMidway through the dive, something big enough to spin me around, hit me from behind and scared me silly.
Read moreEach winter the sleepy industrial town of Whyalla becomes a bustling regional center. Divers, scientists, documentary filmmakers and tourists armed with snorkel gear flock to the dusty red South Australian mining town to see one of the world’s most unique marine spectacles. Each winter thousands of Australian giant cuttlefish (Sepia apama) migrate from the reaches of the Upper Spencer Gulf to the shallow rocky reef between Fitzgerald Bay and False Bay to participate in the penultimate event of their short lives.
Read moreOne reason squid may be going down there at night is because water near the surface is really warm—up to 28 C (82 F)—which may stress them.
Read moreSulewesi came on my radar when I first set eyes on Roger Steene’s book, Coral Seas, published in 1998. At the time, the last thing on my wish list was another coffee table book.
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 moreCephalopods have inspired legends and stories throughout history and are thought to be the most intelligent of the invertebrates. Some can squeeze through the tiniest of cracks. They have eyes and other senses that rival those of humans.
Read morein a hangar-like research building at the Woods Hole Oceanographic Institution (WHOI), biologist T. Aran Mooney is exploring virtually uncharted waters: Can squid hear? Is their hearing sensitive enough to hear approaching predators?
Read moreOctopuses started migrating to new ocean basins more than 30 million years ago as Antarctica cooled and large ice-sheets grew.
Read moreSmaller squid make up for their diminutive size and reduced sexual status by producing bigger sperm. The outsized sperm is produced in a bid to thwart the chances of larger rival males squid impregnating females.
Read moreNoise pollution in the oceans has been shown to cause physical and behavioral changes in marine life, especially in dolphins and whales, which rely on sound for daily activities.
Read more"We think that this extremely rare creature is an early ancestor of squids, octopuses, and other cephalopods", says Martin Smith from the Department of Ecology & Evolutionary Biology at the University of Toronto.
Read moreThe question of whether cephalopods can perceive sound has been controversial since the early 20th Century.
Read moreA broad study of cephalopods - more commonly known as octopuses, cuttlefish and squid - has show that they all possessed toxic proteins that performed functions such as paralysing the nervous system of prey.
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