6mo DD is getting ready to crawl, always moving and generally getting more physical so I decided to take her to swimming classes. She is a lovely natured baby, always happy apart from the odd grizzle like all babies and the beginnings of teeth coming through. First lesson last week, she absolutely loved it at first and squealed and kicked and then suddenly had a meltdown when the teacher gave us floats to use. She cried through the rest of the session - I've never seen her like that but just assumed she had tired herself out, was overwhelmed etc. Second lesson today she cried pretty much the whole first half and only quietened down when she got hold of a rubber duck to chew! The teacher was brilliant and spent some time with her at the end which was lovely. I want to persevere as she seemed to love it at first but am surprised at how she reacted. Obviously I don't want to distress her and am keeping her close. I know it's not life or death but does anyone have any tips or strategies they used to help acclimatise babies to the water?