Ecologists and primary schoolchildren are taking part in a “bioblitz” this week, where they record as many living things as possible within a 24-hour period.

Organised by the Nature Commission in partnership with La Société Guernesiaise, the event aimed to measure how the presence of different species changed over time, organisers said.

Bioblitz 2025 was taking place at L’Ancresse East, which was last surveyed in 2019, they added.