Both mammals and birds:
1. are warm-blooded.
2. are amniotes.
3. are vertebrates with skeletons.
4. have their bodies covered with a keratin-based substance.
5. have a four-chambered heart and a closed circulatory system.
6. have many internal organs, such as brains, hearts, lungs*, bronchi, bronchioles, esophagi, stomachs, intestines, livers, bones, muscles, gallbladders**, and kidneys.
7. have some flightless species and some species that can fly.
8. are tetrapods by descent, although some mammals (e g cetaceans) have lost some limbs.
*Birds' lungs have parabronchi rather than alveoli
**Not all mammals have gallbladders
The Blue whale is the biggest marine animal and, in fact, the biggest animal ever.
The Bowhead whale.
Humpback whale, sperm whale, pilot whale, Beluga, minke, blue whale and fin whale have similar adaptations.
* Land mammal: Moose * Marine mammal: Bowhead whale* Land mammal: Moose * Marine mammal: Bowhead whale* Land mammal: Moose * Marine mammal: Bowhead whale* Land mammal: Moose * Marine mammal: Bowhead whale* Land mammal: Moose * Marine mammal: Bowhead whale* Land mammal: Moose * Marine mammal: Bowhead whale
Hawaii State Mammal: Hawaiian monk seal (Monachus schauinslandi)Hawaii State Marine Mammal: Humpback Whale (Megaptera novaeangliae)
blue whale, didn't you go to school.
Hawaii's state mammal is the Humpback Whale.
The weightiest marine animal, I believe, is the blue whale.
That would be the elephant. ==Or...== If you're including marine mammals, that would be the blue whale.
A Blue Whale eats krill. Which is a shrimp like marine animal.
A poo
The toughest marine animal on earth is the Great White Shark or the Sperm Whale. The Great White Shark is the largest predatory fish in the ocean and can kill man pretty easily. On the other hand, Sperm Whales have been known to battle with giant squids and kill them.