The sea lily (Bourgueticrinida) is an order of marine animals referred to as crinoids. They are typically found in deep ocean waters (to a depth of about 18,000 feet). In their adult form, they are attached to the sea floor by means of a stalk.
The sea otter (Enhydra lutris) is a member of the weasel family that ran away to sea. It is the smallest of the marine mammals and the only one that does not rely on fat (blubber) for warmth. Rather, it has the thickest coat of fur of any mammal – up to one million strands of hair per square inch.
The requirement for scanning of 100% of maritime shipping containers in overseas ports prior to loading on a ship bound for the United States was enacted into federal law (with various caveats) by the Implementing Recommendations of the 9/11 Commission Act of 2007.
The US Coast Guard adopted the concept of geographic districts when it absorbed the US Lighthouse Service in 1939. Previously, it had no formal segmentation of its chain of command based on geography. Rather, the chain of command was grouped around function.
The trireme was utilized as a warship in the Mediterranean Sea from the 7th century BC until the fall of the Roman Republic at about the commencement of the Christian era. No other warship design has survived in service for a comparable period. It was truly the dominant battleship of its day.