Here is a single color palette with 8 shades inspired by the ocean:

1. Color Name: Deep Sea Blue
   Hex Code: 
          
          #001F3F
       
   Description: This deep, rich blue shade represents the depths of the ocean, evoking a sense of mystery and tranquility.

2. Color Name: Turquoise Waters
   Hex Code: 
          
          #00B4D8
       
   Description: This vibrant turquoise hue reflects the crystal-clear waters found in tropical oceanic destinations, creating a refreshing and invigorating atmosphere.

3. Color Name: Seafoam Green
   Hex Code: 
          
          #7FE5F0
       
   Description: This soft and delicate green shade resembles the frothy waves and coastal vegetation, bringing a sense of calmness and serenity.

4. Color Name: Coral Reef
   Hex Code: 
          
          #FF6F61
       
   Description: This warm coral shade embodies the vibrant and diverse marine life found in colorful coral reefs, adding a touch of energy and playfulness to the palette.

5. Color Name: Sandy Beige
   Hex Code: 
          
          #F4E5D4
       
   Description: This sandy beige tone represents the shorelines and sandy beaches, giving a natural and neutral element to the palette.

6. Color Name: Azure Blue
   Hex Code: 
          
          #0077B6
       
   Description: This bright and bold shade of blue symbolizes the clear skies reflecting on the ocean's surface, bringing a sense of optimism and freedom.

7. Color Name: Pearl White
   Hex Code: 
          
          #F8F9FA
       
   Description: This pearly white shade represents the foam and gentle waves, adding a touch of purity and lightness to the palette.

8. Color Name: Stormy Gray
   Hex Code: 
          
          #585858
       
   Description: This dark and moody gray hue represents the stormy seas, creating a sense of drama and intensity within the color palette.

These 8 colors together create a diverse and harmonious palette that captures the essence of the ocean, from its depths to its vibrant marine life and serene coastal landscapes.