A group of seals is commonly referred to as a “herd”. However, some species can also be described as a “sleuth” or a “pod” when they are grouped together. The term you use can depend on the specific species of seal and the context in which they are gathered.
Seals are social animals that often come together in large numbers on beaches or ice floes, which makes these collective nouns a fitting way to describe their gatherings. In many cases, the size and behavior of the group can vary widely, with some seals preferring to stay in smaller pods while others are seen in larger herds.