Orca (aka killer whale)
Cetacean
A whale or a blue whale
The Beluga whale.
Orang-utan is a type of rainforest animal that starts with an 'o' at the start of it's name.
The orca whale comes to visit, to find penguins and seals to eat, but the orca does not live in Antarctica. No animals live in Antarctica.
Orca
Orca
otter
Cetacean
Octopus, Otter, Orca Whale.
A whale or a blue whale
O Henry
Orbit
ozone
owen
Ontario
Orangutan.