any of several experimental U.S. Navy underwater habitats for aquanauts.
noun 1. an embossed emblem, figure, symbol, word, letter, etc., used as attestation or evidence of authenticity. 2. a stamp, medallion, ring, etc., engraved with such a device, for impressing paper, wax, lead, or the like: The king took the seal from his finger and applied it to the document. 3. the impression so obtained: […]
- Sea lace
noun 1. a brown seaweed, Chorda filum, that grows on stones under sandy bottoms and produces chordlike fronds up to 8.5 metres (28 ft) long
noun 1. a set of rungs fixed to the side of a vessel, forming a ladder from the weather deck to the water line. noun 1. a rope ladder, set of steps, etc, by which a boat may be boarded at sea
noun 1. a parasitic marine lamprey, Petromyzon marinus, that spawns in fresh water along both Atlantic coasts and in the Great Lakes, where it is responsible for losses of economically valuable fish. noun 1. a common anadromous lamprey, Petromyzon marinus, a form of which occurs in the Great Lakes of N America and causes great […]