it's an important first start. Full of science, story, and some amazing images, Narwhals introduces us to the 'sea unicorn's' world."-Elizabeth Bradfield, Orion

"Anthropology, conservation, biology and local cultural and economic considerations blend effortlessly in this account. Ultimately the reader comes away with a profound awareness of the complications involved in maintaining in perpetuity a long lived species whose behavioral and ecological circumstances ironically leave it vulnerable to anthropogenic perturbations."-Science Book and Film Review, American Association for the Advancement of Science, September 2013

"His expertise shines in this pithy, entertaining book, which concludes with a sober assessment of the future for this species, one of only three truly Arctic cetaceans, in a warming world."-Kieran Mulvaney, BBC Wildlife

"Part of the book's strength lies in how McLeish captures the vivid sensory worldharvester for cleaning the accumulated vines away. The sun damaged tubers have to be separated from the undamaged tubers and are unrecoverable into a viable product. It is therefore necessary that the vines surrounding the harvested pair of rows be cut from the vines of adjacent rows before the tubers can be properly dug by the potato harvester.
Conventional vine cutters comprise a single disc attached to the potato harvester which rotates with the movement of the potato harvester. The ground penetration of the disc in combination with the rotating cuts the vines. However, when the vines are wet or green, the vines are simply pressed deep into the ground and not cut. The vines then become entangled within the potato harvester. Also, the conventional vine cutters used today