The Research Vessel R/V Petrel’s autonomous underwater vehicle (AUV) first identified the ship in its side scan sonar on March 17. Upon analysis of the sonar data, the Petrel crew deployed its remotely operated underwater vehicle (ROV) on March 18 to verify the wreckage through its video capabilities.
As more people get their first shots of Covid-19 vaccine, some airline industry traditions are coming back. Airlines are slowly returning to their old boarding policies, while quietly re-adding change fees to certain tickets.
According to Travel Weekly, the majority of major airlines will go back to assessing fees on Basic Economy fares by April 1, 2021.
Bruce Partridge is the founder of Shearwater Research, which makes high-quality dive computers, trimix computers and electronic control systems for rebreathers, with simple and intuitive user interfaces and a reputation for being reliable, user-friendly and easy to read underwater.
Cetaceans were not limited by gravity in the buoyant marine environment and evolved multiple giant forms, exemplified today by the largest animal that has ever lived: the blue whale (Balaenoptera musculus).
There are tradeoffs, however, associated with large body size, including a higher lifetime risk of cancer due to a greater number of somatic cell divisions over time. The largest whales can have ∼1,000 times more cells than a human, with long lifespans, leaving them theoretically susceptible to cancer.
