The bonds that link many water molecules together to form a water drop are: ionic
nuclear
covalent
hydrogen​

In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.

covalent

Explanation:

covalent bonds occur when two atoms-in this case oxygen and hydrogen share electrons with each other

not too sure but maybe in the hot springs.