Summary[edit] Description: English: The stenorhynchus seticornis of this image was found under the sea in Lanzarote showing a defensive behaviour. This type of crustacean has recently migrated from larger populations in Tenerife to Lanzarote due to not being competitive enough in their previous home.English: Stenorhynchus seticornis under the sea in Lanzarote in a defensive position to protect from a scuba diver. Date: 13 September 2018. Source: Own work. Author: PabloMPancorbo.