Lumpsucker

Lumpsuckers are stocky, oddly proportioned fish with a large sucker disc on their belly—a modified pelvic fin that lets them cling to rocks and kelp in cold, shallow waters. Their bumpy skin and bulbous head give them a distinctly bottom-dwelling appearance. In the northeast Atlantic and around Iceland, they're common in kelp forests and rocky reefs from the shallows to around 200 metres. Divers may spot them browsing algae or hitching onto larger fish; in aquaculture regions, wild populations sometimes interact with farmed salmon.