Do Whales Get the Bends?


Book Description

Using a question and answer format, this entertaining narrative addresses a multitude of general interest questions about the sea, sea life, seabirds and man's relationship with the sea. Have you ever wondered: Does drinking seawater drive you mad? Do fish drink water? Does anything eat jellyfish? How do flying fish fly? Why do icebergs float? Do Whales Get the Bends? will answer these and over a hundred other intriguing questions. Inspired by questions raised whilst the author was guest lecturer on cruise ships, this fascinating and informative book is a light-hearted, surprising and entertaining read for anyone interested in the sea in its many forms. Each bite-sized entry is no more than two or three pages long, making it an ideal book to dip into for anyone interested in the oceans and the teeming life above and below them.




Do Whales Get the Bends?


Book Description

Using a question and answer format, this entertaining narrative addresses 118 fascinating general interest questions about the oceans, sea life, seabirds and man's ever-changing relationship with the sea.




Could Beaked Whales Get the Bends? Effect of Diving Behaviour and Physiology on Modelled Gas Exchange for Three Species: Ziphius Cavirostris, Mesoplodon Densirostris and Hyperoodon Ampullatus


Book Description

A mathematical model, based on current knowledge of gas exchange and physiology of marine mammals, was used to predict blood and tissue tension N2 (PN2) using field data from three beaked whale species: northern bottlenose whales, Cuvier's beaked whales, and Blainville's beaked whales. The objective was to determine if physiology (body mass, diving lung volume, dive response) or dive behaviour (dive depth and duration, changes in ascent rate, diel behaviour) would lead to differences in PN2 levels and thereby decompression sickness (DCS) risk between species. Diving lung volume and extent of the dive response had a large effect on end-dive PN2 . The dive profile had a larger influence on end-dive PN2 than body mass differences between species. Despite diel changes in dive behaviour, PN2 levels showed no consistent trend. Model output suggested that all three species live with tissue PN2 levels that would cause a significant proportion of DCS cases in terrestrial mammals. Cuvier's beaked whale diving behaviour appears to put them at higher risk than the other species, which may explain their prevalence in strandings after the use of mid-frequency sonar.




Do Whales Get the Bends?


Book Description

Using a question-and-answer format, this entertaining book addresses over 100 general interest questions about the sea, sea life, seabirds and man's relationship with the sea. Inspired by questions raised while the author was a guest lecturer on cruise ships, this fascinating and informative book is a lighthearted, surprising, and entertaining read for anyone interested in the sea in its many forms. Each bite-sized entry is no more than two or three pages long, making it an ideal book to dip into for anyone interested in the oceans and the teeming life above and below them.







Deep Descent


Book Description

An in-depth look at the danger of diving the Andrea Doria, the "Everest" of deep-sea diving, by an award-winning journalist and photographer. On a foggy July evening in 1956, the Italian cruise liner Andrea Doria, bound for New York, was struck broadside by another vessel. In eleven hours, she would sink nearly 250 feet to the murky Atlantic Ocean floor. Thanks to a daring rescue operation, only fifty-one of more than 1,700 people died in the tragedy. But the Andrea Doria is still taking lives. Considered the Mount Everest of diving, the Andrea Doria is the ultimate deepwater wreck challenge. Over the years, a small but fanatical group of extreme scuba divers have investigated the Andrea Doria, pushing themselves to the very limits of human endurance to explore her—and not all have returned. Diver Kevin McMurray takes you inside this elite club with a hard, honest look at those who go deeper, farther, and closer to the edge than others would ever dream. Deep Descent is the riveting true story of the human spirit overcoming human frailty and of fearsome, mortal risks traded for a hard-core adrenaline rush. Chronicling these adventures in his page-turning narrative and in dozens of dramatic photos, McMurray draws us deeper into the cold heart of the unforgiving sea, giving us a powerful vision of a place to which few will ever have the skills—or the courage—to go.




Notes From The Naturalist


Book Description




The Walking Whales


Book Description

Hans Thewissen, a leading researcher in the field of whale paleontology and anatomy, gives a sweeping first-person account of the discoveries that brought to light the early fossil record of whales. As evidenced in the record, whales evolved from herbivorous forest-dwelling ancestors that resembled tiny deer to carnivorous monsters stalking lakes and rivers and to serpentlike denizens of the coast. Thewissen reports on his discoveries in the wilds of India and Pakistan, weaving a narrative that reveals the day-to-day adventures of fossil collection, enriching it with local flavors from South Asian culture and society. The reader senses the excitement of the digs as well as the rigors faced by scientific researchers, for whom each new insight gives rise to even more questions, and for whom at times the logistics of just staying alive may trump all science. In his search for an understanding of how modern whales live their lives, Thewissen also journeys to Japan and Alaska to study whales and wild dolphins. He finds answers to his questions about fossils by studying the anatomy of otters and porpoises and examining whale embryos under the microscope. In the book's final chapter, Thewissen argues for approaching whale evolution with the most powerful tools we have and for combining all the fields of science in pursuit of knowledge.




Whales, Dolphins, and Porpoises


Book Description




Horns, Tusks, and Flippers


Book Description

Since the extinction of the dinosaurs, hoofed mammals have been the planet's dominant herbivores. Native to all continents except Australia and Antarctica, recent paleontological and biological discoveries have deepened understanding of their evolution. This text reveals their evolutionary history.