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 takes a smarter approach by maintaining appropriate caution and staying within realistic bounds. When you're looking at a single beach photograph, option A jumps to conclusions with too much certainty about identifying the exact species. In contrast, option B offers a more credible identification while providing clear reasoning without making overconfident claims about what can actually be determined from the available evidence.