You can use binoculars to see otters. You can also see them through your camera lens
A microscope.
blue.
no they do not
periscope
you can't
No, they are not transparent, they are opaque.
the otters use their paws to swim fast away from predators
They use it to catch fish
swim and look after there young
they bite
claws
They use microscopes, which magnify the organisms that are otherwise impossible to see.