|Weakness||Charge, empowered Sonar|
|Appearances||Ecco the Dolphin|
Charge sonar defeats them instantly, but simply charging them takes two hits.
Arctic spiders hide behind the background and wait for Ecco to approach. When Ecco comes near they jump out and attack. Arctic spiders do not yield no matter how far away Ecco swims and must be defeated or avoided until Ecco has reached the end of the level.