Ice Adapted. Moving through slippery ice difficult terrain costs a walrus no extra movement.

Hold Breath. The walrus can hold its breath for 30 min.

Action

Tusk. Melee Weapon Attack: +4 to hit, reach 5ft., one target. Hit 7 (2d4 + 2)

Slam. Melee Weapon Attack: +4 to hit, reach 5ft., one target. Hit 4 (1d4 + 2). A hit creature must succeed on a DC 10 Strength saving throw or be knocked prone.