Complex sentence: Often, It first squirts its victim with what resembles "superglue" from its spinnerets, immobilising the prey by sticking the victim's limbs and appendages to its own body.
Split into simpler sentences: Often, It first squirtsits victim with what resembles "superglue" from its spinnerets. This immediately immobilises the prey by sticking the victim's limbs and appendages to its own body.