First I thought something went wrong with my eyes when the seagulls looked blue too. But I was able to catch in on photos, so it must have been the reflection on their white feathers!
Thank you for all your comments and fav's on yesterday's photo. Getting in to the water is not as refreshing as it looks. According to the tide-table the seawater is about 31C/88F now. But it was still nice to get in!