Sea Otters.
The pygmy shrew. It weight about as much as dime.
The Mediterranean Sea
gulf of california
The smallest marine mammal is the sea otter, Enhydra Lutris. There are smaller mammals that spend some of their time in water, but the sea otter is the smallest mammal that performs nearly all of its functions (e g eating, reproducing, giving birth) in water.
arcitic ocean
No, many are smaller. The pygmy shrew is about 1/3 size of a field mouse.
well the coldest is probably the weddle sea in the arctic ocean but the smallest would probably be the northern Canadian coral sea
The pygmy shrew is the smallest mammal.
Lemmings are the smallest mammal known to live in the Tundra.
The world's smallest aquatic mammal is a cetacean known as the Vaquita.
The smallest mammal is the Etruscan shrew.
The smallest African mammal is the African pygmy shrew. This is also the smallest mammal in the entire world. They weigh less than 10 grams.