Homework: Phylum Mollusca In the oceans, there are two types of extremely large squid - one is called the "giant squid" and the other is called the "colossal squid". Find out at least two differences between them.

While both giant squid ( *Architeuthis dux*) and colossal squid (*Mesonychoteuthis hamiltoni*) are enormous cephalopods, there are several key differences:<br /><br />1. **Body Shape and Size:** While the giant squid can be longer overall (due to its tentacles), the colossal squid is generally more massive and has a larger, broader body or mantle. Think "long and thin" versus "short and stout." The colossal squid holds the record for the heaviest invertebrate.<br /><br />2. **Tentacle Hooks and Clubs:** Giant squid have suckers lined with small teeth-like rings on their tentacles and arms. Colossal squid, on the other hand, have rotating hooks on their tentacles, in addition to suckers with teeth. Furthermore, the ends of the colossal squid's tentacles broaden into large clubs studded with powerful hooks, while the giant squid's tentacle clubs are smaller and lack these large hooks. This difference in weaponry suggests different hunting strategies.<br />