Primary key words:
breaking waves, wind, turbulence, swirls
environment, water, ocean, air, plume, rivers, estuary, beach, hot air, energy, renewable, fluid mixing (think milk mixing in teas).
Just a few additional points:
(1) We prefer simplistic and elegant line-based or colour-block based designs.
(2) Consideration for the primary keywords is essential.
(3) Please do check out the attached file ("logo_info_pack.zip"), especially in the "final-colour-and-style" and "theme-related-pictures" folders. Hopefully they help to better convey what we are really looking for.