B works better because it stays more cautious and plausible. A sounds too certain about a species-level ID from one beach photo, while B gives a more believable match and explains it without overstating confidence.

Option B comes across as the stronger choice since it takes a more careful and realistic approach. Option A gets a bit too confident when trying to identify a specific species based on just a single beach photo, but B offers a more credible identification while providing good explanations without going overboard on the certainty factor.