Hi, can anybody identify this creature, found in my garden pond? It seems to have a snorkel at one end, with an air bubble attached. Maybe some sort of larvae? The squared paper is 7mm square for scale.
How lucky are you. This is the larva of a soldier fly (Diptera: Stratiomyidae), possibly Stratiomys itself. You are right about the snorkel, this is how these larvae breath under water in the shallow margins of ponds and ditches. Dare I say ... the snorkel, just another invention cribbed from nature :-)