_:b1218402 "A hydrothermal seep is a seep in which diffuse flow of geothermally heated fluids with high methane concentrations. This seep has been proposed as an intermediate between cold seeps and hydrothermal vents."^^ . _:b1218402 . _:b1218402 . _:b1218402 . _:b1218402 "DOI:10.1098/rspb.2012.0205"^^ .