The Sludge Like is a boss found in Tears of the Kingdom. It only appears a single time during the Sidon of the Zora part of the Main Quest, and does not reappear for the rest of the game, making the fight with it the only chance to photograph it for the Hyrule Compendium.
Tears of the Kingdom
The Sludge Like appears in Mipha Court as part of the Sidon of the Zora quest. Link will need to work alongside Sidon to defeat the boss. Unlike other types of Like Like, Sludge Like is encountered on flat ground, rather than on a wall or ceiling.
Link can use Sidon's Power of Water to create a water attack which will remove the Sludge that surrounds the enemy. This will momentarily make it vulnerable to normal Like-Like attacks. Wait for it to attack and then slash at the ball to stun the enemy. Once it is down on the ground, slash away to deal damage. Repeat this process until the Sludge Like has been defeated.
The Like-Like is covered in Sludge