second+visit+to+eco+place

The tide pools have a bunch of different creatures living there. In some of the tide pools, there are some fish, birds, and some cru stations, like hermit crabs, snails, and crabs. The crabs that crawl along the black rocks are black to math the black rocks that they hide in. On their backs is a speckled pattern of darker dots. They use this to hide from predators, like sea birds, that hunt on them. Along the tide pools, were various crab remains from birds. The crabs would hide in the rocks whenever something would come near it. They would come out in the sun and warm themselves. Their were a number of tide pools scattered long the rocks. Some were small and deep, others were and big shallow. In the different tide pools, there were different animals that were washed in from the tide. In the large shallow ones, there were some fish. The fish were colored gray and speckled with brown and black. It was kind a rare to see fish in the shallow ones, and the fish that were in the large ones, were always small that you couldn’t see them unless you looked closely or is they swam around the tide pool. In the smaller but deep tide pools, there were fish as well, but they were larger and had bigger tails. They were the same color as the small ones, just more noticeable. Sometimes In the pools, there would be small rocks that the fish would hide under if they saw movement. They’re that specked gray color to camouflage with the rocks under them, so that predators like crabs and birds, can’t see them. In a lot of the small tide pools, there were hermit crabs. Mostly small ones, but the only big hermit crabs I found were in a long narrow, and slightly deep tide pool. They had different shells on and there eye stalks were a deep blue. When you picked them up, they would get tucked in there shell and hide. Their legs were a striped black and orange color. In a lot of the tide pools were snails. They wouldn’t move, but stay attached to the rocks. Most if them, their shells were black to camouflage against the rocks. Only a few were a brown or grayish color. They also were in different sizes. Most of them were small, and barley able to be picked up. The larger ones were more noticeably and easy to grab and be placed in your hand. Like the hermit crabs, they would tuck into their shells, but unlike the hermit crabs they wouldn’t come back out until they were put on the rocks. Along most of the rocks above water, there were lots of other snails, or opi’i. The opi’I would be stuck to the rocks where you couldn’t get them off. There were also opi’i in the tide pools. They were still hard to get off. The main predator for them would be a human. People get knives and scrape them off the rocks, then stick them in a pot of boiling water to cook. Though at the tide pools, where I went, there was a lot of opi’I everywhere. The opi’i on the rocks above water had dried up salt encrusted on their shells.

How come there are more species in the smaller, but deeper tide pools, then the large but shallower ones? Does it have to do with predators?