When a sea star strives to get near an urchin, the urchin moves its spines aside and lets the sea star's arm get really close. Then the pincers chomp on the sea star's tube feet. The sea star immediately backs off. However, purple sea urchins' pincers can't defend against sunflower stars. If a sunflower star approaches, an urchin waves its spines and pincers and retreats. If the urchin doesn't move away fast enough, the sunflower star swallows the urchin whole.
Interpersonal therapy: A form of psychotherapy in which the focus is on a patient's relationships with peers and family members and the way they see themselves.Interpersonal psychotherapy (IPT) is based on exploring issues in relationships with other people.nterpersonal therapy: A form of psychotherapy in which the focus is on a patient's relationships with peers and family members and the way they see themselves.
Interpersonal therapy focuses on social roles and relationships. The patient works with a therapist to evaluate specific problem areas in the patientâs life, such as conflicts with family or friends or significant life changes.While past experiences help inform the process, interpersonal therapy focuses on improving relationships in the present.nterpersonal therapy is unique in that it focuses on one or two specific problem areas and is designed to bring about a rapid reduction in symptoms. Other benefits include: 1  Improved relationships. 2  Skills for coping in healthier ways. 3  Enhanced problem-solving and communication skills.