photos by flip nicklin — who cofounded whale trust, a non-profit organization dedicated to research and public education — of north pacific humpbacks in their winter hawaiian breading and birthing grounds (the photos without the spruce trees) and off the coast of alaska (the ones with the spruce trees), where they feed in the summer. this annual migration of about six thousand miles is one of the longest of any mammal. (more whale posts)
photos by mike roberts, masa ushioda, peter liu and doug perrine of green sea turtles being cleaned by yellow tangs, goldring surgeonfish and saddle wrasse. by feeding on the algea and parasites which grow on the turtle shells, the fish not only keep them clean, but reduce drag, helping the turtles to swim faster.
see also: butterflies drinking turtle tears
the timid european ground squirrel, stopping to smell the daisies, photographed in vienna by julian rad, who explains, “you have to be at eye level with the squirrels. that means you have to lay on your stomach for quite a few hours in order to get them in front of your lens. you have to make yourself invisible. it is important that they have no indication you are there.” (see also: more precious lil woodland buddies)