- Underwater Vacuum Provides Winter Solution for Sea Urchin Harvest
- Pelagic Argonaut Octopus Pays Visit to California Waters
- Incredible Catch and Release of Great White Shark
A new remotely operated vehicle (ROV) has been tested in the frigid waters of northern Norway to aid in sea urchin harvests, a lucrative industry that experiences significant obstacles due to poor conditions. Sea urchins are traditionally harvested by divers, but extreme cold temperatures of -40C and strong winds make it impossible to dive for them in winter months. Dubbed the Seabed Harvester, the ROV collected 1.88 tonnes (roughly 4144 pounds) of sea urchins in four days, making it the most efficient harvesting method in the winter. Additionally, the Seabed Harvester could be used to assess seabed conditions and sea urchin stocks over larger areas than divers are capable of. There are 50 days of the year in which the ROV cannot operate, leaving 150 days out of 200 for harvesting that would normally be stifled by extreme winter conditions. Long term testing is expected to be carried out before financing for the ROV will be available.
Also known as the paper nautilus for its paper-thin shell, the pelagic argonaut octopus was found a few miles offshore in the waters near Los Angeles, California. The presence of the mollusk in the temperate waters of California is unusual, as it is typically found in the deep waters of tropical and sub-tropical regions, suggesting that warm water currents from the south are prevalent in colder northern waters. The argonaut was taken to the Cabrillo Marine Aquarium for study, where it is now residing in the Aquatic Nursery of the aquarium. Here’s a short video showing the creature coming out of its shell:
Video footage of an Australian fisherman struggling to refloat a great white shark after catching it has gone viral, with nearly 2.5 million views as of today. The angler claims the footage was taken a few years back as he was fishing for gummy sharks, when he reeled in an unexpected great white instead. After pulling it onto the beach, he removed the hook and did the unthinkable: grabbed the apex predator by the tail and hauled it back out to sea, where it swam away once it was deep enough. A sketchy move, to be sure, but a fine example of conservation at work. Check it out: