Spirillum, genus of spiral-shaped bacteria of the family Spirillaceae, aquatic except for one species that causes a type of rat-bite fever in man. The termspirillum<span> is used generally for any of the corkscrew-like species. sounds scary really isnt but it so cooool</span>
hyaline cartilage
The hyaline cartilage is the most common cartilage in the
body. It is a glass-like, translucent , bluish-white cartilage that can be
found on many joint surfaces, the respiratory tract and immature skeleton. It
is also present in the ribs, nose, larynx and trachea.
Answer:
A dam that could allow fish to still pass through is a fishway/fish pass its a "fish ladder" that is structured on or around artificial or natural barriers to allow for fishes natural migration and the movement for potamodromous species.