Squid, and octopus are mollusks without hard shells. At the seashore close to where I live, I often see people gathering sea-urchins, which are animals that look like balls with many long, sharp needles. The yellow and orange eggs of sea-urchins are very popular in Japan. Although sea-urchins are small, they are powerful enough to scrape holes in rocks and metal. Tide pools are small, but fascinating habitats.
Tide pools are small pools in which water stays during low tides.
Small fish, starfish, crabs, and sea anemones are commonly found in tide pools. Fish that live in tide pools have eyes near the top of their heads so they can watch for birds. Sea anemones look like flowers, but they are animals that catch and eat other animals with their flowerlike parts. Unfortunately, humans are quickly destroying seashores with pollution and habitat destruction. The earth needs our protection.