If you are looking for something to do this weekend, why not check out Ireland’s second BioBlitz - a 24 hour biological survey assessing Ireland's biodiversity, beginning on Friday 20th at 5:00pm. The event brings together scientists and the public in a race against time to see how many species can be recorded in five sites around the country, in a 24-hour period. The public is invited to observe the survey, to interact with the official recorders and to participate in the range of other activities arranged by the host venues. These activities include bat walks, pond dipping, mammal tracking, moth trapping, seashore walks and much, much more. Organised by the National Biodiversity Data Centre, BioBlitz takes place in Ballycroy National Park, Co. Mayo, Dromore Woods, Co. Clare, Killarney National Park, Co. Kerry, The Raven Nature Reserve, Co. Wexford, and Liffey Valley Park, Dublin. For the latest news on BioBlitz 2011 or to find out what is happening in your nearest BioBlitz site visit their website or follow the National Biodiversity Data Centre on Twitter.