AComfort is key when you go whale watching in Monterey, CA. Dress in warm layers, including long pants and a warm, windproof jacket as there is extreme wind chill in the coastal side and temperatures are usually lower on sea than on land. Shoes should have flat soles and closed toes, and you may also want to wear a sun hat or warm cap. Bring sunglasses, sun block, and chapstick, and make sure that your camera has a charged battery and plenty of space in its memory. It's better to have waterproof covering for your cameras and electronic gears.