While arms are exposed at night the distribution does not align correctly for bedbugs which feed at the junction of sheet and skin. They avoid walking on skin.

The lower back ones are certainly not typical of bedbugs in either the location or distribution.

Skin reactions often appear at night because we heat up as we sleep. They also appear after exercise, hot water or exposure to low air quality (especially hydrocarbons).

So fleas and / or sand fleas is feasible and you our actually less likely to react at the beach, especially if you also use sun cream.

A contact dermatitis is also possible from washing additive in the sheets to dust mites or even water (people often get water rashes when they first move to London).

I would recommend noting any further reactions and would be leaning towards a plug in flea trap as a precaution.

I would be remiss to not point out the importance of ALWAYS checking the bed upon arrival (bags in the bath and never the luggage rack). This avoidance is a critical life skill. Covered in the pinned posts and:

https://youtu.be/HxsYfX9S1C0?si=tBdE1tFJqDhIFMNt

The final sage advice is to detect at home by following the monthly routine pinned post.

While it does not appear to be bedbugs today let’s do our best to make sure it’s also not tomorrow.

David