parasites
This would seem to describe the hagfish and lampreys. The description fails by saying that they resemble fish. Hagfish and lampreys are classified as jawless fish. They are fish, none-the-less.
Mammel
Surfeit of Lampreys was created in 1941.
Sea lampreys drink or eat blood
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Sea Lampreys have been known since ancient times.
Sea lampreys are fish.
lampreys are only hunted by man
No, lampreys are a cartilaginous fish, and being made of cartilage, they have no bones.
Aluminum is not classified as a semi-metal; it is classified as a metal. Semi-metals, or metalloids, have properties that are intermediate between metals and non-metals. Aluminum is known for its lightweight, malleability, and high conductivity, which are characteristic of metals. Therefore, aluminum is correctly classified simply as a metal.
Lampreys differ from hagfishes by having a notochord that is surrounded by a tube of cartilage.
Birds and mammals are air breathers. Lampreys are not.