That would be a Whale.
Narwhal .
narwhal
No sea otters do not have a blow hole. Sea otters can hold their breath for up to five minutes while under water but they hunt in short dives that only last about a minute.
No, a seal is a mammal not a fish.
The manatee is a sea animal. It is a large marine mammal.
a sea cave
A Sea Ottier is the "smalliest" Mammal in the sea.
Walrus
A Marine Mammal .
Narwhal.
they blow from the sea and then out to land
Walrus are mammals.