Sojourner

Sojourner by Marguerite Antonio is an eco-conscious science fiction story featuring intergalactic beings, talking dolphins and more.
The author's love for sea creatures, especially dolphins and others that are endangered due to pollution inspired the book.
Although a traditional science fiction, some qualities make Sojourner unique:

The blend of fictional elements such as, space travel portals with real life elements such as, nature, humans. This makes the book very relatable, even to those who may not be typical sci fi fans.

As the story combines eco consciousness with entertainment, it takes readers to an exciting fictional world whilst also keeping them grounded in reality and conscious of its challenges.

The current push for awareness on environmental pollution and its consequences on Earth make the book especially relevant today.
Synopsis of Sojourner by Marguerite Antonio:
"Etroygylus is honoured, and somewhat nervous, to be the youngest captain of the four landing parties that the Intergalactic Council dispatched to planet Earth. Their mission is to surreptitiously study and report on the severity of pollution on the planet, and to assess the degree to which humans are addressing the problem. Although he has been well trained, and well versed in the history of Earth's people, he can only hope that his true identity remains hidden behind his alias, "Troy", and that he can safely pilot the landing craft, and lead his crew to successfully complete their mission. He knows they will face challenges and danger, and could meet with hostility and suspicion, but he trusts their sojourn on planet Earth will be informative and hopefully rewarding."