Final answer:
The unknown skull found at the beach may resemble the South African Fur Seal, but further evidence is needed for a definitive identification.
Step-by-step explanation:
The unknown skull found under a rock at the beach has some features that resemble the South African Fur Seal, such as the presence of sutures between parietal and frontal bones and a slight brow-ridge. However, it is important to note that the presence of fused sutures.
The slope of the skull bones away from the center line may indicate that the specimen is an older individual, possibly up to 30 years old. It is also difficult to make a definitive match based on the incomplete skull.
When examining fossils, it is important to consider various factors such as the age and preservation of the specimen, as well as the presence or absence of certain features. Without additional bones or more complete evidence, it is challenging to determine the exact identity of the unknown skull.