They eat everything by swallowing it whole.
They use their many teeth to catch their food!

Fur seals & seals cannot drink sea water. They get their water from the fish they feed on.

They grow large in the ocean & then return to the river.

Salmon are white-fleshed fish.
The reason its flesh appears red is due to the components in the crustaceans it feeds on.

Dolphins are mammals like us, although they live in water! They breathe through their lungs, so they cannot breathe in water!