diff --git a/backend/project/api/serializers/observations.py b/backend/project/api/serializers/observations.py
index 94546be..785c63f 100644
--- a/backend/project/api/serializers/observations.py
+++ b/backend/project/api/serializers/observations.py
@@ -5,7 +5,13 @@
 from rest_framework_gis import serializers as gis_serializers
 from sorl.thumbnail import get_thumbnail
 
-from project.observations.models import Area, Media, Observation, ObservationCategory
+from project.observations.models import (
+    Area,
+    Media,
+    MediaType,
+    Observation,
+    ObservationCategory,
+)
 
 
 class ObservationCategorySerializer(serializers.ModelSerializer):
@@ -34,7 +40,7 @@ class ThumbnailSerializer(serializers.Serializer):
     def get_thumbnail_by_size(
         self, obj, height=100, width=100, format="JPEG", quality=70
     ):
-        if obj.media_type == Media.MediaType.IMAGE:
+        if obj.media_type == MediaType.IMAGE:
             return self.context["request"].build_absolute_uri(
                 get_thumbnail(
                     obj.media_file, f"{width}x{height}", format=format, quality=quality
@@ -102,4 +108,4 @@ def get_bbox(self, obj):
 
     class Meta:
         model = Area
-        fields = ("id", "name", "bbox")
+        fields = ("id", "name", "description", "bbox")
diff --git a/backend/project/observations/migrations/0002_alter_observation_comments.py b/backend/project/observations/migrations/0002_alter_observation_comments.py
new file mode 100644
index 0000000..fa06ad6
--- /dev/null
+++ b/backend/project/observations/migrations/0002_alter_observation_comments.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.0.6 on 2024-07-08 07:34
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("observations", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="observation",
+            name="comments",
+            field=models.TextField(blank=True, default=""),
+        ),
+    ]
diff --git a/backend/project/observations/models.py b/backend/project/observations/models.py
index bfb7f5d..ed42048 100644
--- a/backend/project/observations/models.py
+++ b/backend/project/observations/models.py
@@ -61,7 +61,7 @@ class Observation(TimeStampMixin):
     observer = models.ForeignKey(
         "accounts.User", on_delete=models.SET_NULL, null=True, blank=True
     )
-    comments = models.TextField()
+    comments = models.TextField(blank=True, default="")
     event_date = models.DateField(default=timezone_today, db_index=True)
     source = models.ForeignKey(Source, on_delete=models.SET_NULL, blank=True, null=True)
     category = models.ForeignKey(ObservationCategory, on_delete=models.PROTECT)