Magic Ocean is the latest leisure and entertainment center of Alipay Ant Forest. It focuses on the dissemination of ocean knowledge, especially the daily question-answering activities. Different ocean-related questions will be updated every day. As long as users complete the answers correctly, they can obtain ocean fragments and fragments for free. Collect them all and you can combine them to redeem rewards.
deep sea squid
deep sea coral
Answer: Deep sea coral
Knowledge expansion: Deep-sea corals can be used as "recorders" for marine archaeology. Their calcareous stems have annual ring-shaped "growth patterns". By testing their geochemical indicators, they can provide high-resolution information on changes in seawater temperature over thousands of years. Rate records are unique and precious research materials.