Electromagnetic wave detection element and electromagnetic wave sensor provided with same

An electromagnetic wave detection element, comprising:

• a electromagnetic wave detector that includes an electromagnetic wave absorber and that detects electromagnetic waves;
• and
• an arm part that includes a wiring layer electrically connected to the electromagnetic wave detector, wherein
• a part of the arm part is arranged with a first gap between the arm part and the electromagnetic wave detector, and
• the electromagnetic wave absorber includes first and second protruding parts adjacent to each other in a first direction and separated by a second gap.