A keel
A keel
The bulkheads structurally support the hull.
The underside of a mushroom is called the "gill."
I
These are called "stomata".
sorialso sporangiaSori are the structures on the underside of fronds in which the spores of ferns are produced.
plastron
Guiche
It is called a frog.
They are actually called 'caps'. The underside of the cap has 'gills'
A ship called she because a ship is always WET
A ship called she because a ship is always WET