There a lot of intelligent animal species on this planet that I believe we have reason to admire. Just because they communicate in different ways from us doesn't mean it's not also complex communication.
Look at for instance cetaceans. Dolphins don't have vocal cords to talk, they use body language, touch and different pitched clicks, but still demonstrate language comprehension. When taught a language based on whistles or hand gestures they understood what the signals meant, and that the order had meaning, making distinctions between a message saying bring the ball to the hoop for example vs bring the hoop to the ball. They process main elements that are in human language, symbols standing for objects and actions, and a syntax structure.
Groups of orca whales are said to use different dialects of sound, with mothers passing down their own unique dialect to their young over generations. Orcas who leave the family will learn the sounds of another group of orca. Scientists know of several thousands of unique sounds orcas say during conversation so far. They also appear to display cross-species learning to communicate with other marine life. If they are with dolphins for example they will alter their calls, and make fewer of the pulsed sounds they are known for and start making more clicks.
Aliens visiting planet Earth might observe dolphins and orcas and their other relatives like belugas, and think that the way that they use echolocation to navigate, hunt and protect themselves is more sophisticated than the way we process information. They project sound forward into the water, bounce it off objects, and interpret the echo of the sound waves to determine shapes, size, speed and direction, even an object's internal structure. It's been compared to having a sixth sense, and being able to receive and transmit holographic mental images by manipulating sound. Beluga whales can even change the shape of the melon in their head that focuses echolocation signals to refine the frequencies.