The ocean sunfish, a creature weighing up to two tonnes and covered in parasites, is the focus of a detailed exploration on The Nature of Things 101 with Sarika Cullis-Suzuki as the host. Describing the fish as unconventional with its circular body, lack of a tail, and massive fins, Cullis-Suzuki showcases the unique features of the Mola mola, an underrated species among the largest in the sea.

Known for their long-distance travels and deep dives for food, ocean sunfish like the Mola mola attract parasites due to their slow movement, large surface area, and navigation through various water zones. Researchers have identified 73 parasite species on these fish, some even carrying parasites themselves.

To combat these parasites, sunfish employ tactics such as breaching out of the water and slamming back down, believed to aid in parasite removal. They also allow smaller fish and birds to feed on the parasites. Despite current knowledge, the ocean sunfish remains a species requiring further research, according to Cullis-Suzuki.

For more insights, viewers can watch The Nature of Things 101 on CBC Gem and the official The Nature of Things YouTube channel.