diff --git a/protobuf_definitions/control.proto b/protobuf_definitions/control.proto
index cede7312..09528486 100644
--- a/protobuf_definitions/control.proto
+++ b/protobuf_definitions/control.proto
@@ -269,6 +269,15 @@ message SetColorCorrectionCtrl {
   FilterMessage color_correction_filter = 1; // Message with the color correction settings to set.
 }
 
+// Message sent when the user wants to set marine snow filter settings.
+// Removes bright particles, such as marine snow, from the video. The intensity field sets how faint a particle can be
+// and still be removed (0.0 = only the brightest, 1.0 = faint particles as well). Turn it off during laser detection.
+// Only supported on X3 Ultra.
+message SetMarineSnowFilterCtrl {
+  FilterMessage marine_snow_filter = 1; // Message with the marine snow filter settings to set.
+  MarineSnowFilterFrames frames = 2; // Frames to compare with. Leave it unset to keep the current frames.
+}
+
 // Issue a command to set the digital pan, tilt, and zoom of the main camera.
 //
 // Only supported on X3 Ultra.
diff --git a/protobuf_definitions/message_formats.proto b/protobuf_definitions/message_formats.proto
index 7d9a7dcd..e19aa318 100644
--- a/protobuf_definitions/message_formats.proto
+++ b/protobuf_definitions/message_formats.proto
@@ -1908,6 +1908,12 @@ message FilterMessage {
   float intensity = 2; // Intensity of the filter (0..1).
 }
 
+// Frames that the marine snow filter compares each frame with.
+message MarineSnowFilterFrames {
+  uint32 past_frames = 1; // Past frames to compare with (1..4).
+  uint32 future_frames = 2; // Future frames to compare with (0..2). Each one delays the video by 33 to 40 ms.
+}
+
 // Digital pan, tilt, and zoom state for the main camera.
 //
 // Only supported on X3 Ultra. Controls digital (not mechanical) zoom.
diff --git a/protobuf_definitions/telemetry.proto b/protobuf_definitions/telemetry.proto
index 9219f987..d51326d7 100644
--- a/protobuf_definitions/telemetry.proto
+++ b/protobuf_definitions/telemetry.proto
@@ -369,6 +369,14 @@ message ColorCorrectionTel {
   FilterMessage color_correction_filter = 1; // Color correction settings.
 }
 
+// Marine snow filter settings telemetry message.
+//
+// Message is published when the filter settings are changed.
+message MarineSnowFilterTel {
+  FilterMessage marine_snow_filter = 1; // Marine snow filter settings.
+  MarineSnowFilterFrames frames = 2; // Frames that the filter compares with.
+}
+
 // Digital pan, tilt, and zoom telemetry from the main camera.
 //
 // Reports the actual pan, tilt, and zoom state of the camera.