Is this red-lipped batfish the weirdest fish species? We’ll ask you to hold your judgment until you’ve seen the full list. Joe Dordo Brnobic / Shutterstock

Earth’s oceans are home to some seriously strange swimmers. From fish with transparent heads to bottom dwellers that pack an electric punch, the weirdest fish in the world come in all shapes and sizes.

From venomous spines to expandable stomachs, these strange swimmers showcase the extremes of evolution. Whether they hide in the sand, walk on fins or flash red lips, the weirdest fish in the world remind us that the ocean is full of surprises.

These species defy expectations with bizarre body shapes, extreme adaptations, and downright alien behavior. Let’s dive into the weirdest fish that roam the world’s oceans.