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Public Sightings Suggest Increase in Basking Sharks in British Waters

The number of basking sharks recorded in Britain’s seas could be increasing, decades after being protected from commercial hunting in the late 20^th century.

The most comprehensive analysis ever undertaken of basking shark sightings in UK waters, by the University of Exeter, the Marine Conservation Society (MCS), Cornwall Wildlife Trust (CWT) and Wave Action, is published in the journal Marine Ecology Progress Series.

The northeast Atlantic hosted an extensive commercial fishery for basking sharks, mainly in Norway, Ireland and Scotland, where more than 81,000 were killed between 1952 and 2004, hunted largely for their liver oil. Large-scale hunting ended in the UK in the middle of the twentieth century, though it continued at low levels in Norway until 2000. (more…)

Scientists Discover Land-Ocean Connections off Moloka’i

By Guest PostMarch 10, 2012Scienceamphipods, ashley rowden, bottom fish, canyon, canyon effect, coastal macroalgae, concentration, craig smith, depleted oxygen, earth worms, eel, eric vetter, fabio de leo, family macrouridae, halosaurs, hawaii pacific university, hawaiian archipelago, isopods, jeff drazen, macro invertebrate, mollusks, molokai, noaa, north shore, omz, organic matter, oxygen minimum zone, polychaete worms, rattail fishes, salt lake city, sediment, shark, sixgill shark, soest, submarine canyon, synaphobranchids, tanaids, tiny crustaceans, utah

*Tree trunks, leaves, and kukui nuts indirectly feed bottom fish in submarine canyons off Moloka’i*

Scientists from UH Mānoa’s School of Ocean and Earth Science and Technology (SOEST) recently discovered that land-based plant material and coastal macroalgae indirectly support the increased abundances of bottom fish in submarine canyons, like those off the north shore of Moloka’i. Less than a few miles from the shore, these underwater canyons connect to deep river valleys that cut across the landscape of north Moloka’i. The high elevation and forested landscapes along Moloka’i’s north shore provide plant material, including decomposing tree trunks, leaves and tons of kukui nuts, which enter the ocean via river valleys and “pile up” on submarine canyon floors. (more…)

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Public Sightings Suggest Increase in Basking Sharks in British Waters

Scientists Discover Land-Ocean Connections off Moloka’i