The oldest sea mammal that is in existence today is the bowhead whale They are also the largest mammal on the planet and live longer than any other animal alive today.
A Sea Ottier is the "smalliest" Mammal in the sea.
human
The oldest extinct mammal is one that lived among the dinosaurs. There are new mammals that are being discovered regularly.
A Marine Mammal .
Narwhal.
platypus
no, a sea cucumber is an Echinoderm.
Well the type of mammal a sea otter is a nonochord
no.
No.
Sea Otters.
There is no such thing as a "sea enmity".